diff --git a/bench/BlurImageFilterBench.cpp b/bench/BlurImageFilterBench.cpp
index 1666f57..beaa968 100644
--- a/bench/BlurImageFilterBench.cpp
+++ b/bench/BlurImageFilterBench.cpp
@@ -53,7 +53,7 @@
         const int h = fIsSmall ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
         fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, w, h);
         fCheckerboard.allocPixels();
-        SkDevice device(fCheckerboard);
+        SkBitmapDevice device(fCheckerboard);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
diff --git a/bench/DeferredCanvasBench.cpp b/bench/DeferredCanvasBench.cpp
index 9e7e7238..e14bb24 100644
--- a/bench/DeferredCanvasBench.cpp
+++ b/bench/DeferredCanvasBench.cpp
@@ -26,7 +26,7 @@
     }
 
     virtual void onDraw(SkCanvas* canvas) {
-        SkDevice *device = canvas->getDevice()->createCompatibleDevice(
+        SkBaseDevice *device = canvas->getDevice()->createCompatibleDevice(
             SkBitmap::kARGB_8888_Config, CANVAS_WIDTH, CANVAS_HEIGHT, false);
 
         SkAutoTUnref<SkDeferredCanvas> deferredCanvas(SkDeferredCanvas::Create(device));
diff --git a/bench/DisplacementBench.cpp b/bench/DisplacementBench.cpp
index 5adec1f..8f1483a 100644
--- a/bench/DisplacementBench.cpp
+++ b/bench/DisplacementBench.cpp
@@ -35,7 +35,7 @@
         const int h = isSmall() ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, w, h);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
@@ -51,7 +51,7 @@
         const int h = isSmall() ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
         fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, w, h);
         fCheckerboard.allocPixels();
-        SkDevice device(fCheckerboard);
+        SkBitmapDevice device(fCheckerboard);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
diff --git a/bench/MagnifierBench.cpp b/bench/MagnifierBench.cpp
index 969323a..11f6af8 100644
--- a/bench/MagnifierBench.cpp
+++ b/bench/MagnifierBench.cpp
@@ -52,7 +52,7 @@
         const int h = fIsSmall ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
         fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, w, h);
         fCheckerboard.allocPixels();
-        SkDevice device(fCheckerboard);
+        SkBitmapDevice device(fCheckerboard);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
diff --git a/bench/MergeBench.cpp b/bench/MergeBench.cpp
index 3639c95..170b849 100644
--- a/bench/MergeBench.cpp
+++ b/bench/MergeBench.cpp
@@ -53,7 +53,7 @@
     void make_bitmap() {
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
@@ -67,7 +67,7 @@
     void make_checkerboard() {
         fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
         fCheckerboard.allocPixels();
-        SkDevice device(fCheckerboard);
+        SkBitmapDevice device(fCheckerboard);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
diff --git a/bench/benchmain.cpp b/bench/benchmain.cpp
index 9cb7468..8a3d213 100644
--- a/bench/benchmain.cpp
+++ b/bench/benchmain.cpp
@@ -193,9 +193,9 @@
     kPDF_Backend,
 };
 
-static SkDevice* make_device(SkBitmap::Config config, const SkIPoint& size,
-                             Backend backend, int sampleCount, GrContext* context) {
-    SkDevice* device = NULL;
+static SkBaseDevice* make_device(SkBitmap::Config config, const SkIPoint& size,
+                                 Backend backend, int sampleCount, GrContext* context) {
+    SkBaseDevice* device = NULL;
     SkBitmap bitmap;
     bitmap.setConfig(config, size.fX, size.fY);
 
@@ -203,7 +203,7 @@
         case kRaster_Backend:
             bitmap.allocPixels();
             erase(bitmap);
-            device = SkNEW_ARGS(SkDevice, (bitmap));
+            device = SkNEW_ARGS(SkBitmapDevice, (bitmap));
             break;
 #if SK_SUPPORT_GPU
         case kGPU_Backend: {
@@ -776,7 +776,7 @@
                 glContext = gContextFactory.getGLContext(gConfigs[configIndex].fContextType);
             }
 #endif
-            SkDevice* device = NULL;
+            SkBaseDevice* device = NULL;
             SkCanvas* canvas = NULL;
             SkPicture pictureRecordFrom;
             SkPicture pictureRecordTo;
diff --git a/debugger/QT/SkRasterWidget.cpp b/debugger/QT/SkRasterWidget.cpp
index 3817c0e..d78e5f8 100644
--- a/debugger/QT/SkRasterWidget.cpp
+++ b/debugger/QT/SkRasterWidget.cpp
@@ -12,7 +12,7 @@
     fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 800, 800);
     fBitmap.allocPixels();
     fBitmap.eraseColor(SK_ColorTRANSPARENT);
-    fDevice = new SkDevice(fBitmap);
+    fDevice = new SkBitmapDevice(fBitmap);
     fDebugger = debugger;
     fCanvas = new SkCanvas(fDevice);
     this->setStyleSheet("QWidget {background-color: white; border: 1px solid #cccccc;}");
@@ -29,7 +29,7 @@
     fBitmap.eraseColor(SK_ColorTRANSPARENT);
     SkSafeUnref(fCanvas);
     SkSafeUnref(fDevice);
-    fDevice = new SkDevice(fBitmap);
+    fDevice = new SkBitmapDevice(fBitmap);
     fCanvas = new SkCanvas(fDevice);
     fDebugger->resize(event->size().width(), event->size().height());
     this->update();
diff --git a/debugger/QT/SkRasterWidget.h b/debugger/QT/SkRasterWidget.h
index 769aa51..9e4f01d 100644
--- a/debugger/QT/SkRasterWidget.h
+++ b/debugger/QT/SkRasterWidget.h
@@ -44,7 +44,7 @@
     SkBitmap fBitmap;
     SkDebugger* fDebugger;
     SkCanvas* fCanvas;
-    SkDevice* fDevice;
+    SkBaseDevice* fDevice;
 };
 
 #endif /* SKRASTERWIDGET_H_ */
diff --git a/experimental/PdfViewer/SkNulCanvas.h b/experimental/PdfViewer/SkNulCanvas.h
index 27dd991..6122512 100644
--- a/experimental/PdfViewer/SkNulCanvas.h
+++ b/experimental/PdfViewer/SkNulCanvas.h
@@ -8,7 +8,7 @@
     SK_DECLARE_INST_COUNT(SkNulCanvas);
 
     SkNulCanvas() {}
-    explicit SkNulCanvas(SkDevice* device) : SkCanvas(device) {}
+    explicit SkNulCanvas(SkBaseDevice* device) : SkCanvas(device) {}
 
     explicit SkNulCanvas(const SkBitmap& bitmap) : SkCanvas(bitmap) {}
     virtual ~SkNulCanvas() {}
@@ -83,7 +83,7 @@
 
 protected:
     virtual SkCanvas* canvasForDrawIter() {return NULL;}
-    virtual SkDevice* setDevice(SkDevice* device) {return NULL;}
+    virtual SkBaseDevice* setDevice(SkBaseDevice* device) {return NULL;}
 
 private:
     typedef SkCanvas INHERITED;
diff --git a/experimental/PdfViewer/SkPdfRenderer.cpp b/experimental/PdfViewer/SkPdfRenderer.cpp
index ef13c55..22f274a 100644
--- a/experimental/PdfViewer/SkPdfRenderer.cpp
+++ b/experimental/PdfViewer/SkPdfRenderer.cpp
@@ -242,7 +242,7 @@
 
         memcpy(bitmap.getPixels(), gDumpBitmap->getPixels(), gDumpBitmap->getSize());
 
-        SkAutoTUnref<SkDevice> device(SkNEW_ARGS(SkDevice, (bitmap)));
+        SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (bitmap)));
         SkCanvas canvas(device);
 
         // draw context stuff here
@@ -2641,7 +2641,7 @@
 
     setup_bitmap(output, (int)SkScalarToDouble(width), (int)SkScalarToDouble(height));
 
-    SkAutoTUnref<SkDevice> device(SkNEW_ARGS(SkDevice, (*output)));
+    SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (*output)));
     SkCanvas canvas(device);
 
     return renderer.renderPage(page, &canvas, rect);
diff --git a/experimental/PdfViewer/SkTrackDevice.h b/experimental/PdfViewer/SkTrackDevice.h
index 6f26121..b8c36d9 100644
--- a/experimental/PdfViewer/SkTrackDevice.h
+++ b/experimental/PdfViewer/SkTrackDevice.h
@@ -4,24 +4,24 @@
 #include "SkDevice.h"
 #include "SkTracker.h"
 
-class SkTrackDevice : public SkDevice {
+class SkTrackDevice : public SkBitmapDevice {
 public:
     SK_DECLARE_INST_COUNT(SkTrackDevice)
 
-    SkTrackDevice(const SkBitmap& bitmap) : SkDevice(bitmap)
+    SkTrackDevice(const SkBitmap& bitmap) : SkBitmapDevice(bitmap)
                                           , fTracker(NULL) {}
 
     SkTrackDevice(const SkBitmap& bitmap, const SkDeviceProperties& deviceProperties)
-        : SkDevice(bitmap, deviceProperties)
+        : SkBitmapDevice(bitmap, deviceProperties)
         , fTracker(NULL) {}
 
     SkTrackDevice(SkBitmap::Config config, int width, int height, bool isOpaque = false)
-        : SkDevice(config, width, height, isOpaque)
+        : SkBitmapDevice(config, width, height, isOpaque)
         , fTracker(NULL) {}
 
     SkTrackDevice(SkBitmap::Config config, int width, int height, bool isOpaque,
                   const SkDeviceProperties& deviceProperties)
-        : SkDevice(config, width, height, isOpaque, deviceProperties)
+        : SkBitmapDevice(config, width, height, isOpaque, deviceProperties)
         , fTracker(NULL) {}
 
     virtual ~SkTrackDevice() {}
@@ -147,7 +147,7 @@
         after();
     }
 
-    virtual void drawDevice(const SkDraw& dummy1, SkDevice* dummy2, int x, int y,
+    virtual void drawDevice(const SkDraw& dummy1, SkBaseDevice* dummy2, int x, int y,
                             const SkPaint& dummy3) {
         before();
         INHERITED::drawDevice(dummy1, dummy2, x, y, dummy3);
@@ -171,7 +171,7 @@
 private:
     SkTracker* fTracker;
 
-    typedef SkDevice INHERITED;
+    typedef SkBitmapDevice INHERITED;
 };
 
 #endif  // EXPERIMENTAL_PDFVIEWER_SKTRACKDEVICE_H_
diff --git a/experimental/PdfViewer/pdf_viewer_main.cpp b/experimental/PdfViewer/pdf_viewer_main.cpp
index 8949e7e..7933842 100644
--- a/experimental/PdfViewer/pdf_viewer_main.cpp
+++ b/experimental/PdfViewer/pdf_viewer_main.cpp
@@ -179,7 +179,7 @@
     // Exercise all pdf codepaths as in normal rendering, but no actual bits are changed.
     if (!FLAGS_config.isEmpty() && strcmp(FLAGS_config[0], "nul") == 0) {
         SkBitmap bitmap;
-        SkAutoTUnref<SkDevice> device(SkNEW_ARGS(SkDevice, (bitmap)));
+        SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (bitmap)));
         SkNulCanvas canvas(device);
         renderer.renderPage(page < 0 ? 0 : page, &canvas, rect);
     } else {
@@ -197,9 +197,9 @@
 #else
         setup_bitmap(&bitmap, (int)SkScalarToDouble(width), (int)SkScalarToDouble(height));
 #endif
-        SkAutoTUnref<SkDevice> device;
+        SkAutoTUnref<SkBaseDevice> device;
         if (strcmp(FLAGS_config[0], "8888") == 0) {
-            device.reset(SkNEW_ARGS(SkDevice, (bitmap)));
+            device.reset(SkNEW_ARGS(SkBitmapDevice, (bitmap)));
         }
 #if SK_SUPPORT_GPU
         else if (strcmp(FLAGS_config[0], "gpu") == 0) {
diff --git a/experimental/SkiaExamples/SkExample.cpp b/experimental/SkiaExamples/SkExample.cpp
index 387276a..d3601e1 100644
--- a/experimental/SkiaExamples/SkExample.cpp
+++ b/experimental/SkiaExamples/SkExample.cpp
@@ -115,7 +115,7 @@
 SkCanvas* SkExampleWindow::createCanvas() {
     if (fType == kGPU_DeviceType) {
         if (NULL != fContext && NULL != fRenderTarget) {
-            SkAutoTUnref<SkDevice> device(new SkGpuDevice(fContext, fRenderTarget));
+            SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(fContext, fRenderTarget));
             return new SkCanvas(device);
         }
         tearDownBackend();
diff --git a/experimental/iOSSampleApp/SkSampleUIView.mm b/experimental/iOSSampleApp/SkSampleUIView.mm
index 9fc95bd..421dfcf 100644
--- a/experimental/iOSSampleApp/SkSampleUIView.mm
+++ b/experimental/iOSSampleApp/SkSampleUIView.mm
@@ -136,8 +136,8 @@
             case SampleWindow::kGPU_DeviceType:
             case SampleWindow::kNullGPU_DeviceType:
                 if (fCurContext) {
-                    SkAutoTUnref<SkDevice> device(new SkGpuDevice(fCurContext,
-                                                                  fCurRenderTarget));
+                    SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(fCurContext,
+                                                                      fCurRenderTarget));
                     return new SkCanvas(device);
                 } else {
                     return NULL;
diff --git a/gm/bitmapcopy.cpp b/gm/bitmapcopy.cpp
index 1c56bde..5e88cfd 100644
--- a/gm/bitmapcopy.cpp
+++ b/gm/bitmapcopy.cpp
@@ -66,7 +66,7 @@
         SkScalar horizMargin(SkIntToScalar(10));
         SkScalar vertMargin(SkIntToScalar(10));
 
-        SkDevice devTmp(SkBitmap::kARGB_8888_Config, 40, 40);
+        SkBitmapDevice devTmp(SkBitmap::kARGB_8888_Config, 40, 40, false);
         SkCanvas canvasTmp(&devTmp);
 
         draw_checks(&canvasTmp, 40, 40);
diff --git a/gm/deviceproperties.cpp b/gm/deviceproperties.cpp
index 5739b57..8bca4b7 100644
--- a/gm/deviceproperties.cpp
+++ b/gm/deviceproperties.cpp
@@ -44,7 +44,7 @@
             SkDeviceProperties::Geometry::Make(SkDeviceProperties::Geometry::kVertical_Orientation,
                                                SkDeviceProperties::Geometry::kBGR_Layout),
             SK_Scalar1);
-        SkDevice device(bitmap, properties);
+        SkBitmapDevice device(bitmap, properties);
         SkCanvas canvas(&device);
         canvas.drawColor(SK_ColorWHITE);
 
diff --git a/gm/displacement.cpp b/gm/displacement.cpp
index 888051d..5031720 100644
--- a/gm/displacement.cpp
+++ b/gm/displacement.cpp
@@ -25,7 +25,7 @@
     void make_bitmap() {
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
@@ -39,7 +39,7 @@
     void make_checkerboard() {
         fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
         fCheckerboard.allocPixels();
-        SkDevice device(fCheckerboard);
+        SkBitmapDevice device(fCheckerboard);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
diff --git a/gm/extractbitmap.cpp b/gm/extractbitmap.cpp
index 59f8a93..5206741 100644
--- a/gm/extractbitmap.cpp
+++ b/gm/extractbitmap.cpp
@@ -74,7 +74,7 @@
         }
 
         // Now do the same but with a device bitmap as source image
-        SkAutoTUnref<SkDevice> secondDevice(canvas->createCompatibleDevice(
+        SkAutoTUnref<SkBaseDevice> secondDevice(canvas->createCompatibleDevice(
             SkBitmap::kARGB_8888_Config, bitmap.width(),
             bitmap.height(), true));
         SkCanvas secondCanvas(secondDevice.get());
diff --git a/gm/gmmain.cpp b/gm/gmmain.cpp
index 773e1e7..09dd96e 100644
--- a/gm/gmmain.cpp
+++ b/gm/gmmain.cpp
@@ -517,7 +517,7 @@
         SkAutoTUnref<SkCanvas> canvas;
 
         if (gRec.fBackend == kRaster_Backend) {
-            SkAutoTUnref<SkDevice> device(SkNEW_ARGS(SkDevice, (*bitmap)));
+            SkAutoTUnref<SkBaseDevice> device(SkNEW_ARGS(SkBitmapDevice, (*bitmap)));
             if (deferred) {
                 canvas.reset(SkDeferredCanvas::Create(device));
             } else {
@@ -528,7 +528,7 @@
         }
 #if SK_SUPPORT_GPU
         else {  // GPU
-            SkAutoTUnref<SkDevice> device(SkGpuDevice::Create(gpuTarget));
+            SkAutoTUnref<SkBaseDevice> device(SkGpuDevice::Create(gpuTarget));
             if (deferred) {
                 canvas.reset(SkDeferredCanvas::Create(device));
             } else {
diff --git a/gm/imagefiltersgraph.cpp b/gm/imagefiltersgraph.cpp
index 38df075..363a414 100644
--- a/gm/imagefiltersgraph.cpp
+++ b/gm/imagefiltersgraph.cpp
@@ -32,7 +32,7 @@
     void make_bitmap() {
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
diff --git a/gm/lighting.cpp b/gm/lighting.cpp
index f16e781..a89a7f1 100644
--- a/gm/lighting.cpp
+++ b/gm/lighting.cpp
@@ -27,7 +27,7 @@
     void make_bitmap() {
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
diff --git a/gm/matrixconvolution.cpp b/gm/matrixconvolution.cpp
index 59bd380..853b57b 100644
--- a/gm/matrixconvolution.cpp
+++ b/gm/matrixconvolution.cpp
@@ -26,7 +26,7 @@
     void make_bitmap() {
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
diff --git a/gm/morphology.cpp b/gm/morphology.cpp
index 83de758..2d29fcd 100644
--- a/gm/morphology.cpp
+++ b/gm/morphology.cpp
@@ -28,7 +28,7 @@
     void make_bitmap() {
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 135, 135);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x0);
         SkPaint paint;
diff --git a/gm/ninepatchstretch.cpp b/gm/ninepatchstretch.cpp
index c4c5291..551f020 100644
--- a/gm/ninepatchstretch.cpp
+++ b/gm/ninepatchstretch.cpp
@@ -14,7 +14,7 @@
 #endif
 
 static void make_bitmap(SkBitmap* bitmap, GrContext* ctx, SkIRect* center) {
-    SkDevice* dev;
+    SkBaseDevice* dev;
 
     const int kFixed = 28;
     const int kStretchy = 8;
@@ -29,7 +29,7 @@
     {
         bitmap->setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize);
         bitmap->allocPixels();
-        dev = new SkDevice(*bitmap);
+        dev = new SkBitmapDevice(*bitmap);
     }
 
     SkCanvas canvas(dev);
diff --git a/gm/srcmode.cpp b/gm/srcmode.cpp
index 66729e2..e8a97e2 100644
--- a/gm/srcmode.cpp
+++ b/gm/srcmode.cpp
@@ -124,7 +124,7 @@
             SkImage::kPremul_AlphaType
         };
 #if SK_SUPPORT_GPU
-        SkDevice* dev = canvas->getDevice();
+        SkBaseDevice* dev = canvas->getDevice();
         if (!skipGPU && dev->accessRenderTarget()) {
             SkGpuDevice* gd = (SkGpuDevice*)dev;
             GrContext* ctx = gd->context();
diff --git a/gm/texdata.cpp b/gm/texdata.cpp
index 612cc64..0e2d7fd 100644
--- a/gm/texdata.cpp
+++ b/gm/texdata.cpp
@@ -38,7 +38,7 @@
     }
 
     virtual void onDraw(SkCanvas* canvas) {
-        SkDevice* device = canvas->getTopDevice();
+        SkBaseDevice* device = canvas->getTopDevice();
         GrRenderTarget* target = device->accessRenderTarget();
         GrContext* ctx = GetGr();
         if (ctx && target) {
diff --git a/gm/xfermodeimagefilter.cpp b/gm/xfermodeimagefilter.cpp
index 86225af..94d60e4 100644
--- a/gm/xfermodeimagefilter.cpp
+++ b/gm/xfermodeimagefilter.cpp
@@ -31,7 +31,7 @@
     void make_bitmap() {
         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
         fBitmap.allocPixels();
-        SkDevice device(fBitmap);
+        SkBitmapDevice device(fBitmap);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
@@ -45,7 +45,7 @@
     void make_checkerboard() {
         fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config, 80, 80);
         fCheckerboard.allocPixels();
-        SkDevice device(fCheckerboard);
+        SkBitmapDevice device(fCheckerboard);
         SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint darkPaint;
diff --git a/gm/xfermodes3.cpp b/gm/xfermodes3.cpp
index f1eff1f..baac3cd 100644
--- a/gm/xfermodes3.cpp
+++ b/gm/xfermodes3.cpp
@@ -132,7 +132,7 @@
             desc.fConfig = rt->config();
             desc.fFlags = kRenderTarget_GrTextureFlagBit;
             SkAutoTUnref<GrSurface> surface(context->createUncachedTexture(desc, NULL, 0));
-            SkAutoTUnref<SkDevice> device(SkGpuDevice::Create(surface.get()));
+            SkAutoTUnref<SkBaseDevice> device(SkGpuDevice::Create(surface.get()));
             if (NULL != device.get()) {
                 tempCanvas = SkNEW_ARGS(SkCanvas, (device.get()));
             }
diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index 827ebe8..cfc252f 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -22,7 +22,7 @@
 #include "SkXfermode.h"
 
 class SkBounder;
-class SkDevice;
+class SkBaseDevice;
 class SkDraw;
 class SkDrawFilter;
 class SkMetaData;
@@ -55,7 +55,7 @@
 
         @param device   Specifies a device for the canvas to draw into.
     */
-    explicit SkCanvas(SkDevice* device);
+    explicit SkCanvas(SkBaseDevice* device);
 
     /** Deprecated - Construct a canvas with the specified bitmap to draw into.
         @param bitmap   Specifies a bitmap for the canvas to draw into. Its
@@ -84,7 +84,7 @@
         the bitmap of the pixels that the canvas draws into. The reference count
         of the returned device is not changed by this call.
     */
-    SkDevice* getDevice() const;
+    SkBaseDevice* getDevice() const;
 
     /**
      *  saveLayer() can create another device (which is later drawn onto
@@ -99,15 +99,15 @@
      *        is drawn to, but is optional here, as there is a small perf hit
      *        sometimes.
      */
-    SkDevice* getTopDevice(bool updateMatrixClip = false) const;
+    SkBaseDevice* getTopDevice(bool updateMatrixClip = false) const;
 
     /**
      *  Shortcut for getDevice()->createCompatibleDevice(...).
      *  If getDevice() == NULL, this method does nothing, and returns NULL.
      */
-    SkDevice* createCompatibleDevice(SkBitmap::Config config,
-                                    int width, int height,
-                                    bool isOpaque);
+    SkBaseDevice* createCompatibleDevice(SkBitmap::Config config,
+                                         int width, int height,
+                                         bool isOpaque);
 
     ///////////////////////////////////////////////////////////////////////////
 
@@ -994,7 +994,7 @@
 
         // These reflect the current device in the iterator
 
-        SkDevice*       device() const;
+        SkBaseDevice*   device() const;
         const SkMatrix& matrix() const;
         const SkRegion& clip() const;
         const SkPaint&  paint() const;
@@ -1043,7 +1043,7 @@
      reference count is incremented. If the canvas was already holding a
      device, its reference count is decremented. The new device is returned.
      */
-    virtual SkDevice* setDevice(SkDevice* device);
+    virtual SkBaseDevice* setDevice(SkBaseDevice* device);
 
 private:
     class MCRec;
@@ -1074,10 +1074,10 @@
     friend class SkDrawIter;    // needs setupDrawForLayerDevice()
     friend class AutoDrawLooper;
 
-    SkDevice* createLayerDevice(SkBitmap::Config, int width, int height,
-                                bool isOpaque);
+    SkBaseDevice* createLayerDevice(SkBitmap::Config, int width, int height,
+                                    bool isOpaque);
 
-    SkDevice* init(SkDevice*);
+    SkBaseDevice* init(SkBaseDevice*);
 
     // internal methods are not virtual, so they can safely be called by other
     // canvas apis, without confusing subclasses (like SkPictureRecording)
@@ -1090,7 +1090,7 @@
     void internalDrawPaint(const SkPaint& paint);
     int internalSaveLayer(const SkRect* bounds, const SkPaint* paint,
                           SaveFlags, bool justForImageFilter);
-    void internalDrawDevice(SkDevice*, int x, int y, const SkPaint*);
+    void internalDrawDevice(SkBaseDevice*, int x, int y, const SkPaint*);
 
     // shared by save() and saveLayer()
     int internalSave(SaveFlags flags);
diff --git a/include/core/SkDevice.h b/include/core/SkDevice.h
index 47eebe2..39fad6c 100644
--- a/include/core/SkDevice.h
+++ b/include/core/SkDevice.h
@@ -25,57 +25,21 @@
 
 class GrRenderTarget;
 
-class SK_API SkDevice : public SkRefCnt {
+class SK_API SkBaseDevice : public SkRefCnt {
 public:
-    SK_DECLARE_INST_COUNT(SkDevice)
+    SK_DECLARE_INST_COUNT(SkBaseDevice)
 
     /**
-     *  Construct a new device with the specified bitmap as its backend. It is
-     *  valid for the bitmap to have no pixels associated with it. In that case,
-     *  any drawing to this device will have no effect.
+     *  Construct a new device.
     */
-    SkDevice(const SkBitmap& bitmap);
+    SkBaseDevice();
 
     /**
-     *  Construct a new device with the specified bitmap as its backend. It is
-     *  valid for the bitmap to have no pixels associated with it. In that case,
-     *  any drawing to this device will have no effect.
+     *  Construct a new device.
     */
-    SkDevice(const SkBitmap& bitmap, const SkDeviceProperties& deviceProperties);
+    SkBaseDevice(const SkDeviceProperties& deviceProperties);
 
-    /**
-     *  Create a new raster device and have the pixels be automatically
-     *  allocated. The rowBytes of the device will be computed automatically
-     *  based on the config and the width.
-     *
-     *  @param config   The desired config for the pixels. If the request cannot
-     *                  be met, the closest matching support config will be used.
-     *  @param width    width (in pixels) of the device
-     *  @param height   height (in pixels) of the device
-     *  @param isOpaque Set to true if it is known that all of the pixels will
-     *                  be drawn to opaquely. Used as an accelerator when drawing
-     *                  these pixels to another device.
-     */
-    SkDevice(SkBitmap::Config config, int width, int height, bool isOpaque = false);
-
-    /**
-     *  Create a new raster device and have the pixels be automatically
-     *  allocated. The rowBytes of the device will be computed automatically
-     *  based on the config and the width.
-     *
-     *  @param config   The desired config for the pixels. If the request cannot
-     *                  be met, the closest matching support config will be used.
-     *  @param width    width (in pixels) of the device
-     *  @param height   height (in pixels) of the device
-     *  @param isOpaque Set to true if it is known that all of the pixels will
-     *                  be drawn to opaquely. Used as an accelerator when drawing
-     *                  these pixels to another device.
-     *  @param deviceProperties Properties which affect compositing.
-     */
-    SkDevice(SkBitmap::Config config, int width, int height, bool isOpaque,
-             const SkDeviceProperties& deviceProperties);
-
-    virtual ~SkDevice();
+    virtual ~SkBaseDevice();
 
     /**
      *  Creates a device that is of the same type as this device (e.g. SW-raster,
@@ -88,9 +52,9 @@
      *                  draw into this device such that all of the pixels will
      *                  be opaque.
      */
-    SkDevice* createCompatibleDevice(SkBitmap::Config config,
-                                     int width, int height,
-                                     bool isOpaque);
+    SkBaseDevice* createCompatibleDevice(SkBitmap::Config config,
+                                         int width, int height,
+                                         bool isOpaque);
 
     SkMetaData& getMetaData();
 
@@ -99,14 +63,14 @@
         kVector_Capability = 0x2,  //!< mask indicating a vector representation
         kAll_Capabilities  = 0x3
     };
-    virtual uint32_t getDeviceCapabilities() { return 0; }
+    virtual uint32_t getDeviceCapabilities() = 0;
 
     /** Return the width of the device (in pixels).
     */
-    virtual int width() const { return fBitmap.width(); }
+    virtual int width() const = 0;
     /** Return the height of the device (in pixels).
     */
-    virtual int height() const { return fBitmap.height(); }
+    virtual int height() const = 0;
 
     /** Return the image properties of the device. */
     virtual const SkDeviceProperties& getDeviceProperties() const {
@@ -119,16 +83,12 @@
      *  canvas. The root device will have its top-left at 0,0, but other devices
      *  such as those associated with saveLayer may have a non-zero origin.
      */
-    void getGlobalBounds(SkIRect* bounds) const;
+    virtual void getGlobalBounds(SkIRect* bounds) const = 0;
 
     /** Returns true if the device's bitmap's config treats every pixels as
         implicitly opaque.
     */
-    bool isOpaque() const { return fBitmap.isOpaque(); }
-
-    /** Return the bitmap config of the device's pixels
-    */
-    SkBitmap::Config config() const { return fBitmap.getConfig(); }
+    virtual bool isOpaque() const = 0;
 
     /** Return the bitmap associated with this device. Call this each time you need
         to access the bitmap, as it notifies the subclass to perform any flushing
@@ -154,12 +114,12 @@
      *  not kARGB_8888_Config then this parameter is ignored.
      */
     virtual void writePixels(const SkBitmap& bitmap, int x, int y,
-                             SkCanvas::Config8888 config8888 = SkCanvas::kNative_Premul_Config8888);
+                             SkCanvas::Config8888 config8888 = SkCanvas::kNative_Premul_Config8888) = 0;
 
     /**
      * Return the device's associated gpu render target, or NULL.
      */
-    virtual GrRenderTarget* accessRenderTarget() { return NULL; }
+    virtual GrRenderTarget* accessRenderTarget() = 0;
 
 
     /**
@@ -171,7 +131,7 @@
     /**
      * onAttachToCanvas is invoked whenever a device is installed in a canvas
      * (i.e., setDevice, saveLayer (for the new device created by the save),
-     * and SkCanvas' SkDevice & SkBitmap -taking ctors). It allows the
+     * and SkCanvas' SkBaseDevice & SkBitmap -taking ctors). It allows the
      * devices to prepare for drawing (e.g., locking their pixels, etc.)
      */
     virtual void onAttachToCanvas(SkCanvas*) {
@@ -213,9 +173,9 @@
      *  textflags parameter (output) and return true. If the paint is fine as
      *  is, then ignore the textflags parameter and return false.
      *
-     *  The baseclass SkDevice filters based on its depth and blitters.
+     *  The baseclass SkBaseDevice filters based on its depth and blitters.
      */
-    virtual bool filterTextFlags(const SkPaint& paint, TextFlags*);
+    virtual bool filterTextFlags(const SkPaint& paint, TextFlags*) = 0;
 
     /**
      *
@@ -234,12 +194,12 @@
      *  passed in).
      */
      virtual void setMatrixClip(const SkMatrix&, const SkRegion&,
-                                const SkClipStack&);
+                                const SkClipStack&) {};
 
     /** Clears the entire device to the specified color (including alpha).
      *  Ignores the clip.
      */
-    virtual void clear(SkColor color);
+    virtual void clear(SkColor color) = 0;
 
     /**
      * Deprecated name for clear.
@@ -251,15 +211,15 @@
      and are handling any looping from the paint, and any effects from the
      DrawFilter.
      */
-    virtual void drawPaint(const SkDraw&, const SkPaint& paint);
+    virtual void drawPaint(const SkDraw&, const SkPaint& paint) = 0;
     virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count,
-                            const SkPoint[], const SkPaint& paint);
+                            const SkPoint[], const SkPaint& paint) = 0;
     virtual void drawRect(const SkDraw&, const SkRect& r,
-                          const SkPaint& paint);
+                          const SkPaint& paint) = 0;
     virtual void drawOval(const SkDraw&, const SkRect& oval,
-                          const SkPaint& paint);
+                          const SkPaint& paint) = 0;
     virtual void drawRRect(const SkDraw&, const SkRRect& rr,
-                           const SkPaint& paint);
+                           const SkPaint& paint) = 0;
 
     /**
      *  If pathIsMutable, then the implementation is allowed to cast path to a
@@ -275,11 +235,11 @@
     virtual void drawPath(const SkDraw&, const SkPath& path,
                           const SkPaint& paint,
                           const SkMatrix* prePathMatrix = NULL,
-                          bool pathIsMutable = false);
+                          bool pathIsMutable = false) = 0;
     virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap,
-                            const SkMatrix& matrix, const SkPaint& paint);
+                            const SkMatrix& matrix, const SkPaint& paint) = 0;
     virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap,
-                            int x, int y, const SkPaint& paint);
+                            int x, int y, const SkPaint& paint) = 0;
 
     /**
      *  The default impl. will create a bitmap-shader from the bitmap,
@@ -288,35 +248,35 @@
     virtual void drawBitmapRect(const SkDraw&, const SkBitmap&,
                                 const SkRect* srcOrNull, const SkRect& dst,
                                 const SkPaint& paint,
-                                SkCanvas::DrawBitmapRectFlags flags);
+                                SkCanvas::DrawBitmapRectFlags flags) = 0;
 
     /**
      *  Does not handle text decoration.
      *  Decorations (underline and stike-thru) will be handled by SkCanvas.
      */
     virtual void drawText(const SkDraw&, const void* text, size_t len,
-                          SkScalar x, SkScalar y, const SkPaint& paint);
+                          SkScalar x, SkScalar y, const SkPaint& paint) = 0;
     virtual void drawPosText(const SkDraw&, const void* text, size_t len,
                              const SkScalar pos[], SkScalar constY,
-                             int scalarsPerPos, const SkPaint& paint);
+                             int scalarsPerPos, const SkPaint& paint) = 0;
     virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
                                 const SkPath& path, const SkMatrix* matrix,
-                                const SkPaint& paint);
+                                const SkPaint& paint) = 0;
 #ifdef SK_BUILD_FOR_ANDROID
     virtual void drawPosTextOnPath(const SkDraw& draw, const void* text, size_t len,
                                    const SkPoint pos[], const SkPaint& paint,
-                                   const SkPath& path, const SkMatrix* matrix);
+                                   const SkPath& path, const SkMatrix* matrix) = 0;
 #endif
     virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount,
                               const SkPoint verts[], const SkPoint texs[],
                               const SkColor colors[], SkXfermode* xmode,
                               const uint16_t indices[], int indexCount,
-                              const SkPaint& paint);
-    /** The SkDevice passed will be an SkDevice which was returned by a call to
+                              const SkPaint& paint) = 0;
+    /** The SkBaseDevice passed will be an SkBaseDevice which was returned by a call to
         onCreateCompatibleDevice on this device with kSaveLayer_Usage.
      */
-    virtual void drawDevice(const SkDraw&, SkDevice*, int x, int y,
-                            const SkPaint&);
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
+                            const SkPaint&) = 0;
 
     /**
      *  On success (returns true), copy the device pixels into the bitmap.
@@ -352,13 +312,307 @@
     ///////////////////////////////////////////////////////////////////////////
 
     /** Update as needed the pixel value in the bitmap, so that the caller can
+        access the pixels directly. 
+        @return The device contents as a bitmap
+    */
+    virtual const SkBitmap& onAccessBitmap() = 0;
+
+    /**
+     * Implements readPixels API. The caller will ensure that:
+     *  1. bitmap has pixel config kARGB_8888_Config.
+     *  2. bitmap has pixels.
+     *  3. The rectangle (x, y, x + bitmap->width(), y + bitmap->height()) is
+     *     contained in the device bounds.
+     */
+    virtual bool onReadPixels(const SkBitmap& bitmap,
+                              int x, int y,
+                              SkCanvas::Config8888 config8888) = 0;
+
+    /** Called when this device is installed into a Canvas. Balanaced by a call
+        to unlockPixels() when the device is removed from a Canvas.
+    */
+    virtual void lockPixels() = 0;
+    virtual void unlockPixels() = 0;
+
+    /**
+     *  Returns true if the device allows processing of this imagefilter. If
+     *  false is returned, then the filter is ignored. This may happen for
+     *  some subclasses that do not support pixel manipulations after drawing
+     *  has occurred (e.g. printing). The default implementation returns true.
+     */
+    virtual bool allowImageFilter(SkImageFilter*) = 0;
+
+    /**
+     *  Override and return true for filters that the device can handle
+     *  intrinsically. Doing so means that SkCanvas will pass-through this
+     *  filter to drawSprite and drawDevice (and potentially filterImage).
+     *  Returning false means the SkCanvas will have apply the filter itself,
+     *  and just pass the resulting image to the device.
+     */
+    virtual bool canHandleImageFilter(SkImageFilter*) = 0;
+
+    /**
+     *  Related (but not required) to canHandleImageFilter, this method returns
+     *  true if the device could apply the filter to the src bitmap and return
+     *  the result (and updates offset as needed).
+     *  If the device does not recognize or support this filter,
+     *  it just returns false and leaves result and offset unchanged.
+     */
+    virtual bool filterImage(SkImageFilter*, const SkBitmap&, const SkMatrix&,
+                             SkBitmap* result, SkIPoint* offset) = 0;
+
+    // This is equal kBGRA_Premul_Config8888 or kRGBA_Premul_Config8888 if
+    // either is identical to kNative_Premul_Config8888. Otherwise, -1.
+    static const SkCanvas::Config8888 kPMColorAlias;
+
+private:
+    friend class SkCanvas;
+    friend struct DeviceCM; //for setMatrixClip
+    friend class SkDraw;
+    friend class SkDrawIter;
+    friend class SkDeviceFilteredPaint;
+    friend class SkDeviceImageFilterProxy;
+
+    friend class SkSurface_Raster;
+
+    // used to change the backend's pixels (and possibly config/rowbytes)
+    // but cannot change the width/height, so there should be no change to
+    // any clip information.
+    virtual void replaceBitmapBackendForRasterSurface(const SkBitmap&) = 0;
+
+    // just called by SkCanvas when built as a layer
+    void setOrigin(int x, int y) { fOrigin.set(x, y); }
+    // just called by SkCanvas for saveLayer
+    SkBaseDevice* createCompatibleDeviceForSaveLayer(SkBitmap::Config config,
+                                                     int width, int height,
+                                                     bool isOpaque);
+
+    /**
+     * Subclasses should override this to implement createCompatibleDevice.
+     */
+    virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config config,
+                                                   int width, int height,
+                                                   bool isOpaque,
+                                                   Usage usage) = 0;
+
+    /** Causes any deferred drawing to the device to be completed.
+     */
+    virtual void flush() = 0;
+
+    SkIPoint    fOrigin;
+    SkMetaData* fMetaData;
+    /**
+     *  Leaky properties are those which the device should be applying but it isn't.
+     *  These properties will be applied by the draw, when and as it can.
+     *  If the device does handle a property, that property should be set to the identity value
+     *  for that property, effectively making it non-leaky.
+     */
+    SkDeviceProperties fLeakyProperties;
+
+#ifdef SK_DEBUG
+    bool        fAttachedToCanvas;
+#endif
+
+    typedef SkRefCnt INHERITED;
+};
+
+///////////////////////////////////////////////////////////////////////////////
+class SK_API SkBitmapDevice : public SkBaseDevice {
+public:
+    SK_DECLARE_INST_COUNT(SkBitmapDevice)
+
+    /**
+     *  Construct a new device with the specified bitmap as its backend. It is
+     *  valid for the bitmap to have no pixels associated with it. In that case,
+     *  any drawing to this device will have no effect.
+    */
+    SkBitmapDevice(const SkBitmap& bitmap);
+
+    /**
+     *  Construct a new device with the specified bitmap as its backend. It is
+     *  valid for the bitmap to have no pixels associated with it. In that case,
+     *  any drawing to this device will have no effect.
+    */
+    SkBitmapDevice(const SkBitmap& bitmap, const SkDeviceProperties& deviceProperties);
+
+    /**
+     *  Create a new raster device and have the pixels be automatically
+     *  allocated. The rowBytes of the device will be computed automatically
+     *  based on the config and the width.
+     *
+     *  @param config   The desired config for the pixels. If the request cannot
+     *                  be met, the closest matching support config will be used.
+     *  @param width    width (in pixels) of the device
+     *  @param height   height (in pixels) of the device
+     *  @param isOpaque Set to true if it is known that all of the pixels will
+     *                  be drawn to opaquely. Used as an accelerator when drawing
+     *                  these pixels to another device.
+     */
+    SkBitmapDevice(SkBitmap::Config config, int width, int height, bool isOpaque);
+
+    /**
+     *  Create a new raster device and have the pixels be automatically
+     *  allocated. The rowBytes of the device will be computed automatically
+     *  based on the config and the width.
+     *
+     *  @param config   The desired config for the pixels. If the request cannot
+     *                  be met, the closest matching support config will be used.
+     *  @param width    width (in pixels) of the device
+     *  @param height   height (in pixels) of the device
+     *  @param isOpaque Set to true if it is known that all of the pixels will
+     *                  be drawn to opaquely. Used as an accelerator when drawing
+     *                  these pixels to another device.
+     *  @param deviceProperties Properties which affect compositing.
+     */
+    SkBitmapDevice(SkBitmap::Config config, int width, int height, bool isOpaque,
+                   const SkDeviceProperties& deviceProperties);
+
+    virtual ~SkBitmapDevice();
+
+    virtual uint32_t getDeviceCapabilities() SK_OVERRIDE { return 0; }
+
+    /** Return the width of the device (in pixels).
+    */
+    virtual int width() const SK_OVERRIDE { return fBitmap.width(); }
+    /** Return the height of the device (in pixels).
+    */
+    virtual int height() const SK_OVERRIDE { return fBitmap.height(); }
+
+    /**
+     *  Return the bounds of the device in the coordinate space of the root
+     *  canvas. The root device will have its top-left at 0,0, but other devices
+     *  such as those associated with saveLayer may have a non-zero origin.
+     */
+    virtual void getGlobalBounds(SkIRect* bounds) const SK_OVERRIDE;
+
+    /** Returns true if the device's bitmap's config treats every pixels as
+        implicitly opaque.
+    */
+    virtual bool isOpaque() const SK_OVERRIDE { return fBitmap.isOpaque(); }
+
+    /** Return the bitmap config of the device's pixels
+    */
+    virtual SkBitmap::Config config() const { return fBitmap.getConfig(); }
+
+    /**
+     *  DEPRECATED: This will be made protected once WebKit stops using it.
+     *              Instead use Canvas' writePixels method.
+     *
+     *  Similar to draw sprite, this method will copy the pixels in bitmap onto
+     *  the device, with the top/left corner specified by (x, y). The pixel
+     *  values in the device are completely replaced: there is no blending.
+     *
+     *  Currently if bitmap is backed by a texture this is a no-op. This may be
+     *  relaxed in the future.
+     *
+     *  If the bitmap has config kARGB_8888_Config then the config8888 param
+     *  will determines how the pixel valuess are intepreted. If the bitmap is
+     *  not kARGB_8888_Config then this parameter is ignored.
+     */
+    virtual void writePixels(const SkBitmap& bitmap, int x, int y,
+                             SkCanvas::Config8888 config8888) SK_OVERRIDE;
+
+    /**
+     * Return the device's associated gpu render target, or NULL.
+     */
+    virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE { return NULL; }
+
+protected:
+    /**
+     *  Device may filter the text flags for drawing text here. If it wants to
+     *  make a change to the specified values, it should write them into the
+     *  textflags parameter (output) and return true. If the paint is fine as
+     *  is, then ignore the textflags parameter and return false.
+     *
+     *  The baseclass SkDevice filters based on its depth and blitters.
+     */
+    virtual bool filterTextFlags(const SkPaint& paint, TextFlags*) SK_OVERRIDE;
+
+    /** Clears the entire device to the specified color (including alpha).
+     *  Ignores the clip.
+     */
+    virtual void clear(SkColor color) SK_OVERRIDE;
+
+    /** These are called inside the per-device-layer loop for each draw call.
+     When these are called, we have already applied any saveLayer operations,
+     and are handling any looping from the paint, and any effects from the
+     DrawFilter.
+     */
+    virtual void drawPaint(const SkDraw&, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count,
+                            const SkPoint[], const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRect(const SkDraw&, const SkRect& r,
+                          const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawOval(const SkDraw&, const SkRect& oval,
+                          const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawRRect(const SkDraw&, const SkRRect& rr,
+                           const SkPaint& paint) SK_OVERRIDE;
+
+    /**
+     *  If pathIsMutable, then the implementation is allowed to cast path to a
+     *  non-const pointer and modify it in place (as an optimization). Canvas
+     *  may do this to implement helpers such as drawOval, by placing a temp
+     *  path on the stack to hold the representation of the oval.
+     *
+     *  If prePathMatrix is not null, it should logically be applied before any
+     *  stroking or other effects. If there are no effects on the paint that
+     *  affect the geometry/rasterization, then the pre matrix can just be
+     *  pre-concated with the current matrix.
+     */
+    virtual void drawPath(const SkDraw&, const SkPath& path,
+                          const SkPaint& paint,
+                          const SkMatrix* prePathMatrix = NULL,
+                          bool pathIsMutable = false) SK_OVERRIDE;
+    virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap,
+                            const SkMatrix& matrix, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap,
+                            int x, int y, const SkPaint& paint) SK_OVERRIDE;
+
+    /**
+     *  The default impl. will create a bitmap-shader from the bitmap,
+     *  and call drawRect with it.
+     */
+    virtual void drawBitmapRect(const SkDraw&, const SkBitmap&,
+                                const SkRect* srcOrNull, const SkRect& dst,
+                                const SkPaint& paint,
+                                SkCanvas::DrawBitmapRectFlags flags) SK_OVERRIDE;
+
+    /**
+     *  Does not handle text decoration.
+     *  Decorations (underline and stike-thru) will be handled by SkCanvas.
+     */
+    virtual void drawText(const SkDraw&, const void* text, size_t len,
+                          SkScalar x, SkScalar y, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawPosText(const SkDraw&, const void* text, size_t len,
+                             const SkScalar pos[], SkScalar constY,
+                             int scalarsPerPos, const SkPaint& paint) SK_OVERRIDE;
+    virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
+                                const SkPath& path, const SkMatrix* matrix,
+                                const SkPaint& paint) SK_OVERRIDE;
+#ifdef SK_BUILD_FOR_ANDROID
+    virtual void drawPosTextOnPath(const SkDraw& draw, const void* text, size_t len,
+                                   const SkPoint pos[], const SkPaint& paint,
+                                   const SkPath& path, const SkMatrix* matrix) SK_OVERRIDE;
+#endif
+    virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount,
+                              const SkPoint verts[], const SkPoint texs[],
+                              const SkColor colors[], SkXfermode* xmode,
+                              const uint16_t indices[], int indexCount,
+                              const SkPaint& paint) SK_OVERRIDE;
+    /** The SkBaseDevice passed will be an SkBaseDevice which was returned by a call to
+        onCreateCompatibleDevice on this device with kSaveLayer_Usage.
+     */
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
+                            const SkPaint&) SK_OVERRIDE;
+
+    ///////////////////////////////////////////////////////////////////////////
+
+    /** Update as needed the pixel value in the bitmap, so that the caller can
         access the pixels directly. Note: only the pixels field should be
         altered. The config/width/height/rowbytes must remain unchanged.
-        @param bitmap The device's bitmap
-        @return Echo the bitmap parameter, or an alternate (shadow) bitmap
-            maintained by the subclass.
+        @return the device contents as a bitmap
     */
-    virtual const SkBitmap& onAccessBitmap(SkBitmap*);
+    virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE;
 
     SkPixelRef* getPixelRef() const { return fBitmap.pixelRef(); }
     // just for subclasses, to assign a custom pixelref
@@ -376,13 +630,13 @@
      */
     virtual bool onReadPixels(const SkBitmap& bitmap,
                               int x, int y,
-                              SkCanvas::Config8888 config8888);
+                              SkCanvas::Config8888 config8888) SK_OVERRIDE;
 
-    /** Called when this device is installed into a Canvas. Balanaced by a call
+    /** Called when this device is installed into a Canvas. Balanced by a call
         to unlockPixels() when the device is removed from a Canvas.
     */
-    virtual void lockPixels();
-    virtual void unlockPixels();
+    virtual void lockPixels() SK_OVERRIDE;
+    virtual void unlockPixels() SK_OVERRIDE;
 
     /**
      *  Returns true if the device allows processing of this imagefilter. If
@@ -390,7 +644,7 @@
      *  some subclasses that do not support pixel manipulations after drawing
      *  has occurred (e.g. printing). The default implementation returns true.
      */
-    virtual bool allowImageFilter(SkImageFilter*);
+    virtual bool allowImageFilter(SkImageFilter*) SK_OVERRIDE;
 
     /**
      *  Override and return true for filters that the device can handle
@@ -399,7 +653,7 @@
      *  Returning false means the SkCanvas will have apply the filter itself,
      *  and just pass the resulting image to the device.
      */
-    virtual bool canHandleImageFilter(SkImageFilter*);
+    virtual bool canHandleImageFilter(SkImageFilter*) SK_OVERRIDE;
 
     /**
      *  Related (but not required) to canHandleImageFilter, this method returns
@@ -409,11 +663,7 @@
      *  it just returns false and leaves result and offset unchanged.
      */
     virtual bool filterImage(SkImageFilter*, const SkBitmap&, const SkMatrix&,
-                             SkBitmap* result, SkIPoint* offset);
-
-    // This is equal kBGRA_Premul_Config8888 or kRGBA_Premul_Config8888 if
-    // either is identical to kNative_Premul_Config8888. Otherwise, -1.
-    static const SkCanvas::Config8888 kPMColorAlias;
+                             SkBitmap* result, SkIPoint* offset) SK_OVERRIDE;
 
 private:
     friend class SkCanvas;
@@ -424,46 +674,31 @@
     friend class SkDeviceImageFilterProxy;
 
     friend class SkSurface_Raster;
+
     // used to change the backend's pixels (and possibly config/rowbytes)
     // but cannot change the width/height, so there should be no change to
     // any clip information.
-    void replaceBitmapBackendForRasterSurface(const SkBitmap&);
-
-    // just called by SkCanvas when built as a layer
-    void setOrigin(int x, int y) { fOrigin.set(x, y); }
-    // just called by SkCanvas for saveLayer
-    SkDevice* createCompatibleDeviceForSaveLayer(SkBitmap::Config config,
-                                                 int width, int height,
-                                                 bool isOpaque);
+    virtual void replaceBitmapBackendForRasterSurface(const SkBitmap&) SK_OVERRIDE;
 
     /**
      * Subclasses should override this to implement createCompatibleDevice.
      */
-    virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config config,
-                                               int width, int height,
-                                               bool isOpaque,
-                                               Usage usage);
+    virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config config,
+                                                   int width, int height,
+                                                   bool isOpaque,
+                                                   Usage usage) SK_OVERRIDE;
 
     /** Causes any deferred drawing to the device to be completed.
      */
-    virtual void flush() {}
+    virtual void flush() SK_OVERRIDE {}
 
     SkBitmap    fBitmap;
-    SkIPoint    fOrigin;
-    SkMetaData* fMetaData;
-    /**
-     *  Leaky properties are those which the device should be applying but it isn't.
-     *  These properties will be applied by the draw, when and as it can.
-     *  If the device does handle a property, that property should be set to the identity value
-     *  for that property, effectively making it non-leaky.
-     */
-    SkDeviceProperties fLeakyProperties;
 
-#ifdef SK_DEBUG
-    bool        fAttachedToCanvas;
-#endif
-
-    typedef SkRefCnt INHERITED;
+    typedef SkBaseDevice INHERITED;
 };
 
+// Temporary typedef until Chromium (and other clients) are able to move to
+// SkBaseDevice or SkBitmapDevice
+typedef SkBitmapDevice SkDevice;
+
 #endif
diff --git a/include/core/SkDraw.h b/include/core/SkDraw.h
index 8642f0a..1c2c66e 100644
--- a/include/core/SkDraw.h
+++ b/include/core/SkDraw.h
@@ -17,7 +17,7 @@
 class SkBitmap;
 class SkBounder;
 class SkClipStack;
-class SkDevice;
+class SkBaseDevice;
 class SkMatrix;
 class SkPath;
 class SkRegion;
@@ -127,7 +127,7 @@
     const SkRasterClip* fRC;        // required
 
     const SkClipStack* fClipStack;  // optional
-    SkDevice*       fDevice;        // optional
+    SkBaseDevice*   fDevice;        // optional
     SkBounder*      fBounder;       // optional
     SkDrawProcs*    fProcs;         // optional
 
diff --git a/include/core/SkImageFilter.h b/include/core/SkImageFilter.h
index 01b3e0b..9dd1f7a 100644
--- a/include/core/SkImageFilter.h
+++ b/include/core/SkImageFilter.h
@@ -13,7 +13,7 @@
 
 class SkBitmap;
 class SkColorFilter;
-class SkDevice;
+class SkBaseDevice;
 class SkMatrix;
 struct SkIPoint;
 class SkShader;
@@ -35,7 +35,7 @@
     public:
         virtual ~Proxy() {};
 
-        virtual SkDevice* createDevice(int width, int height) = 0;
+        virtual SkBaseDevice* createDevice(int width, int height) = 0;
         // returns true if the proxy can handle this filter natively
         virtual bool canHandleImageFilter(SkImageFilter*) = 0;
         // returns true if the proxy handled the filter itself. if this returns
diff --git a/include/core/SkRRect.h b/include/core/SkRRect.h
index bce896a..32d6285 100644
--- a/include/core/SkRRect.h
+++ b/include/core/SkRRect.h
@@ -25,7 +25,7 @@
 //      use growToInclude to fit skp round rects & generate stats (RRs vs. real paths)
 //      check on # of rectorus's the RRs could handle
 //   rendering work
-//      add entry points (clipRRect, drawRRect) - plumb down to SkDevice
+//      add entry points (clipRRect, drawRRect) - plumb down to SkBaseDevice
 //      update SkPath.addRRect() to take an SkRRect - only use quads
 //          -- alternatively add addRRectToPath here
 //      add GM and bench
diff --git a/include/device/xps/SkXPSDevice.h b/include/device/xps/SkXPSDevice.h
index dab8d1f..91307a5 100644
--- a/include/device/xps/SkXPSDevice.h
+++ b/include/device/xps/SkXPSDevice.h
@@ -30,7 +30,7 @@
 
     The drawing context for the XPS backend.
 */
-class SkXPSDevice : public SkDevice {
+class SkXPSDevice : public SkBitmapDevice {
 public:
     SK_API SkXPSDevice();
     SK_API virtual ~SkXPSDevice();
@@ -134,7 +134,7 @@
 
     virtual void drawDevice(
         const SkDraw&,
-        SkDevice* device,
+        SkBaseDevice* device,
         int x, int y,
         const SkPaint& paint) SK_OVERRIDE;
 
@@ -307,18 +307,17 @@
         const SkVector& ppuScale,
         IXpsOMPath* shadedPath);
 
-    // override from SkDevice
-    virtual SkDevice* onCreateCompatibleDevice(
-        SkBitmap::Config config,
-        int width, int height,
-        bool isOpaque,
-        Usage usage) SK_OVERRIDE;
+    // override from SkBaseDevice
+    virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config config,
+                                                   int width, int height,
+                                                   bool isOpaque,
+                                                   Usage usage) SK_OVERRIDE;
 
     // Disable the default copy and assign implementation.
     SkXPSDevice(const SkXPSDevice&);
     void operator=(const SkXPSDevice&);
 
-    typedef SkDevice INHERITED;
+    typedef SkBitmapDevice INHERITED;
 };
 
 #endif
diff --git a/include/gpu/SkGpuDevice.h b/include/gpu/SkGpuDevice.h
index 40d2554..a24128b 100644
--- a/include/gpu/SkGpuDevice.h
+++ b/include/gpu/SkGpuDevice.h
@@ -22,10 +22,10 @@
 class GrTextContext;
 
 /**
- *  Subclass of SkDevice, which directs all drawing to the GrGpu owned by the
+ *  Subclass of SkBitmapDevice, which directs all drawing to the GrGpu owned by the
  *  canvas.
  */
-class SK_API SkGpuDevice : public SkDevice {
+class SK_API SkGpuDevice : public SkBitmapDevice {
 public:
 
     /**
@@ -62,7 +62,7 @@
 
     virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE;
 
-    // overrides from SkDevice
+    // overrides from SkBaseDevice
 
     virtual void clear(SkColor color) SK_OVERRIDE;
     virtual void writePixels(const SkBitmap& bitmap, int x, int y,
@@ -101,11 +101,11 @@
                               const SkColor colors[], SkXfermode* xmode,
                               const uint16_t indices[], int indexCount,
                               const SkPaint&) SK_OVERRIDE;
-    virtual void drawDevice(const SkDraw&, SkDevice*, int x, int y,
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                             const SkPaint&) SK_OVERRIDE;
     virtual bool filterTextFlags(const SkPaint&, TextFlags*) SK_OVERRIDE;
 
-    virtual void flush();
+    virtual void flush() SK_OVERRIDE;
 
     virtual void onAttachToCanvas(SkCanvas* canvas) SK_OVERRIDE;
     virtual void onDetachFromCanvas() SK_OVERRIDE;
@@ -123,7 +123,7 @@
     class SkAutoCachedTexture; // used internally
 
 protected:
-    // overrides from SkDevice
+    // overrides from SkBaseDevice
     virtual bool onReadPixels(const SkBitmap& bitmap,
                               int x, int y,
                               SkCanvas::Config8888 config8888) SK_OVERRIDE;
@@ -145,11 +145,11 @@
     // used by createCompatibleDevice
     SkGpuDevice(GrContext*, GrTexture* texture, bool needClear);
 
-    // override from SkDevice
-    virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config config,
-                                               int width, int height,
-                                               bool isOpaque,
-                                               Usage usage) SK_OVERRIDE;
+    // override from SkBaseDevice
+    virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config config,
+                                                   int width, int height,
+                                                   bool isOpaque,
+                                                   Usage usage) SK_OVERRIDE;
 
     SkDrawProcs* initDrawForText(GrTextContext*);
 
@@ -192,7 +192,7 @@
      */
     GrTextContext* getTextContext();
 
-    typedef SkDevice INHERITED;
+    typedef SkBitmapDevice INHERITED;
 };
 
 #endif
diff --git a/include/pdf/SkPDFDevice.h b/include/pdf/SkPDFDevice.h
index e64b83f..b38c9a1 100644
--- a/include/pdf/SkPDFDevice.h
+++ b/include/pdf/SkPDFDevice.h
@@ -44,7 +44,7 @@
 
     The drawing context for the PDF backend.
 */
-class SkPDFDevice : public SkDevice {
+class SkPDFDevice : public SkBitmapDevice {
 public:
     /** Create a PDF drawing context with the given width and height.
      *  72 points/in means letter paper is 612x792.
@@ -107,7 +107,7 @@
                               const SkPoint texs[], const SkColor colors[],
                               SkXfermode* xmode, const uint16_t indices[],
                               int indexCount, const SkPaint& paint) SK_OVERRIDE;
-    virtual void drawDevice(const SkDraw&, SkDevice*, int x, int y,
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                             const SkPaint&) SK_OVERRIDE;
 
     virtual void onAttachToCanvas(SkCanvas* canvas) SK_OVERRIDE;
@@ -237,11 +237,11 @@
     SkPDFDevice(const SkISize& layerSize, const SkClipStack& existingClipStack,
                 const SkRegion& existingClipRegion);
 
-    // override from SkDevice
-    virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config config,
-                                               int width, int height,
-                                               bool isOpaque,
-                                               Usage usage) SK_OVERRIDE;
+    // override from SkBaseDevice
+    virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config config,
+                                                   int width, int height,
+                                                   bool isOpaque,
+                                                   Usage usage) SK_OVERRIDE;
 
     void init();
     void cleanUp(bool clearFontUsage);
@@ -310,7 +310,7 @@
     void defineNamedDestination(SkData* nameData, const SkPoint& point,
                                 const SkMatrix& matrix);
 
-    typedef SkDevice INHERITED;
+    typedef SkBitmapDevice INHERITED;
 };
 
 #endif
diff --git a/include/utils/SkDeferredCanvas.h b/include/utils/SkDeferredCanvas.h
index 539e5d3..c0613ed 100644
--- a/include/utils/SkDeferredCanvas.h
+++ b/include/utils/SkDeferredCanvas.h
@@ -33,7 +33,7 @@
      */
     static SkDeferredCanvas* Create(SkSurface* surface);
 
-    static SkDeferredCanvas* Create(SkDevice* device);
+    static SkDeferredCanvas* Create(SkBaseDevice* device);
 
     virtual ~SkDeferredCanvas();
 
diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index 53c28e4..b3632f8 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -269,7 +269,7 @@
                                    SampleWindow* win) {
 #if SK_SUPPORT_GPU
         if (IsGpuDeviceType(dType) && NULL != fCurContext) {
-            SkAutoTUnref<SkDevice> device(new SkGpuDevice(fCurContext, fCurRenderTarget));
+            SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(fCurContext, fCurRenderTarget));
             return new SkCanvas(device);
         } else
 #endif
@@ -1429,7 +1429,7 @@
     if (fRequestGrabImage) {
         fRequestGrabImage = false;
 
-        SkDevice* device = orig->getDevice();
+        SkBaseDevice* device = orig->getDevice();
         SkBitmap bmp;
         if (device->accessBitmap(false).copyTo(&bmp, SkBitmap::kARGB_8888_Config)) {
             static int gSampleGrabCounter;
diff --git a/samplecode/SampleApp.h b/samplecode/SampleApp.h
index 61e6c5d..9328f15 100644
--- a/samplecode/SampleApp.h
+++ b/samplecode/SampleApp.h
@@ -61,7 +61,7 @@
     /**
      * SampleApp ports can subclass this manager class if they want to:
      *      * filter the types of devices supported
-     *      * customize plugging of SkDevice objects into an SkCanvas
+     *      * customize plugging of SkBaseDevice objects into an SkCanvas
      *      * customize publishing the results of draw to the OS window
      *      * manage GrContext / GrRenderTarget lifetimes
      */
diff --git a/samplecode/SampleCircle.cpp b/samplecode/SampleCircle.cpp
index f65ba01..87ca487 100644
--- a/samplecode/SampleCircle.cpp
+++ b/samplecode/SampleCircle.cpp
@@ -74,7 +74,7 @@
     }
 
     static void blowup(SkCanvas* canvas, const SkIRect& src, const SkRect& dst) {
-        SkDevice* device = canvas->getDevice();
+        SkBaseDevice* device = canvas->getDevice();
         const SkBitmap& bm = device->accessBitmap(false);
         canvas->drawBitmapRect(bm, &src, dst, NULL);
     }
diff --git a/samplecode/SampleTextureDomain.cpp b/samplecode/SampleTextureDomain.cpp
index de84c35..5928f3c 100644
--- a/samplecode/SampleTextureDomain.cpp
+++ b/samplecode/SampleTextureDomain.cpp
@@ -61,7 +61,7 @@
         // the constrainted texture domain.
         // Note:  GPU-backed bitmaps follow a different rendering path
         // when copying from one GPU device to another.
-        SkAutoTUnref<SkDevice> secondDevice(canvas->createCompatibleDevice(
+        SkAutoTUnref<SkBaseDevice> secondDevice(canvas->createCompatibleDevice(
                 SkBitmap::kARGB_8888_Config, 5, 5, true));
         SkCanvas secondCanvas(secondDevice.get());
 
diff --git a/src/core/SkBBoxHierarchyRecord.cpp b/src/core/SkBBoxHierarchyRecord.cpp
index 9c02468..61a82ce 100644
--- a/src/core/SkBBoxHierarchyRecord.cpp
+++ b/src/core/SkBBoxHierarchyRecord.cpp
@@ -11,7 +11,7 @@
 
 SkBBoxHierarchyRecord::SkBBoxHierarchyRecord(uint32_t recordFlags,
                                              SkBBoxHierarchy* h,
-                                             SkDevice* device)
+                                             SkBaseDevice* device)
     : INHERITED(recordFlags, device) {
     fStateTree = SkNEW(SkPictureStateTree);
     fBoundingHierarchy = h;
diff --git a/src/core/SkBBoxHierarchyRecord.h b/src/core/SkBBoxHierarchyRecord.h
index 27da3c9..7284ab0 100644
--- a/src/core/SkBBoxHierarchyRecord.h
+++ b/src/core/SkBBoxHierarchyRecord.h
@@ -20,7 +20,7 @@
 public:
     /** This will take a ref of h */
     SkBBoxHierarchyRecord(uint32_t recordFlags, SkBBoxHierarchy* h,
-                          SkDevice*);
+                          SkBaseDevice*);
 
     virtual void handleBBox(const SkRect& bounds) SK_OVERRIDE;
 
diff --git a/src/core/SkBBoxRecord.h b/src/core/SkBBoxRecord.h
index 7859df1..fa8b282 100644
--- a/src/core/SkBBoxRecord.h
+++ b/src/core/SkBBoxRecord.h
@@ -19,7 +19,7 @@
 class SkBBoxRecord : public SkPictureRecord {
 public:
 
-    SkBBoxRecord(uint32_t recordFlags, SkDevice* device)
+    SkBBoxRecord(uint32_t recordFlags, SkBaseDevice* device)
             : INHERITED(recordFlags, device) { }
     virtual ~SkBBoxRecord() { }
 
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index c59cd04..a8a1d99 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -129,7 +129,7 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
-/*  This is the record we keep for each SkDevice that the user installs.
+/*  This is the record we keep for each SkBaseDevice that the user installs.
     The clip/matrix/proc are fields that reflect the top of the save/restore
     stack. Whenever the canvas changes, it marks a dirty flag, and then before
     these are used (assuming we're not on a layer) we rebuild these cache
@@ -138,12 +138,12 @@
 */
 struct DeviceCM {
     DeviceCM*           fNext;
-    SkDevice*           fDevice;
+    SkBaseDevice*       fDevice;
     SkRasterClip        fClip;
     const SkMatrix*     fMatrix;
     SkPaint*            fPaint; // may be null (in the future)
 
-    DeviceCM(SkDevice* device, int x, int y, const SkPaint* paint, SkCanvas* canvas)
+    DeviceCM(SkBaseDevice* device, int x, int y, const SkPaint* paint, SkCanvas* canvas)
             : fNext(NULL) {
         if (NULL != device) {
             device->ref();
@@ -315,7 +315,7 @@
         return false;
     }
 
-    SkDevice* getDevice() const { return fDevice; }
+    SkBaseDevice* getDevice() const { return fDevice; }
     int getX() const { return fDevice->getOrigin().x(); }
     int getY() const { return fDevice->getOrigin().y(); }
     const SkMatrix& getMatrix() const { return *fMatrix; }
@@ -482,7 +482,7 @@
 
 ////////////////////////////////////////////////////////////////////////////
 
-SkDevice* SkCanvas::init(SkDevice* device) {
+SkBaseDevice* SkCanvas::init(SkBaseDevice* device) {
     fBounder = NULL;
     fLocalBoundsCompareType.setEmpty();
     fLocalBoundsCompareTypeDirty = true;
@@ -511,7 +511,7 @@
     this->init(NULL);
 }
 
-SkCanvas::SkCanvas(SkDevice* device)
+SkCanvas::SkCanvas(SkBaseDevice* device)
         : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) {
     inc_canvas();
 
@@ -522,7 +522,7 @@
         : fMCStack(sizeof(MCRec), fMCRecStorage, sizeof(fMCRecStorage)) {
     inc_canvas();
 
-    this->init(SkNEW_ARGS(SkDevice, (bitmap)))->unref();
+    this->init(SkNEW_ARGS(SkBitmapDevice, (bitmap)))->unref();
 }
 
 SkCanvas::~SkCanvas() {
@@ -564,37 +564,37 @@
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkCanvas::flush() {
-    SkDevice* device = this->getDevice();
+    SkBaseDevice* device = this->getDevice();
     if (device) {
         device->flush();
     }
 }
 
 SkISize SkCanvas::getDeviceSize() const {
-    SkDevice* d = this->getDevice();
+    SkBaseDevice* d = this->getDevice();
     return d ? SkISize::Make(d->width(), d->height()) : SkISize::Make(0, 0);
 }
 
-SkDevice* SkCanvas::getDevice() const {
+SkBaseDevice* SkCanvas::getDevice() const {
     // return root device
     MCRec* rec = (MCRec*) fMCStack.front();
     SkASSERT(rec && rec->fLayer);
     return rec->fLayer->fDevice;
 }
 
-SkDevice* SkCanvas::getTopDevice(bool updateMatrixClip) const {
+SkBaseDevice* SkCanvas::getTopDevice(bool updateMatrixClip) const {
     if (updateMatrixClip) {
         const_cast<SkCanvas*>(this)->updateDeviceCMCache();
     }
     return fMCRec->fTopLayer->fDevice;
 }
 
-SkDevice* SkCanvas::setDevice(SkDevice* device) {
+SkBaseDevice* SkCanvas::setDevice(SkBaseDevice* device) {
     // return root device
     SkDeque::F2BIter iter(fMCStack);
     MCRec*           rec = (MCRec*)iter.next();
     SkASSERT(rec && rec->fLayer);
-    SkDevice*       rootDevice = rec->fLayer->fDevice;
+    SkBaseDevice*    rootDevice = rec->fLayer->fDevice;
 
     if (rootDevice == device) {
         return device;
@@ -644,7 +644,7 @@
 bool SkCanvas::readPixels(SkBitmap* bitmap,
                           int x, int y,
                           Config8888 config8888) {
-    SkDevice* device = this->getDevice();
+    SkBaseDevice* device = this->getDevice();
     if (!device) {
         return false;
     }
@@ -652,7 +652,7 @@
 }
 
 bool SkCanvas::readPixels(const SkIRect& srcRect, SkBitmap* bitmap) {
-    SkDevice* device = this->getDevice();
+    SkBaseDevice* device = this->getDevice();
     if (!device) {
         return false;
     }
@@ -676,7 +676,7 @@
 
 void SkCanvas::writePixels(const SkBitmap& bitmap, int x, int y,
                            Config8888 config8888) {
-    SkDevice* device = this->getDevice();
+    SkBaseDevice* device = this->getDevice();
     if (device) {
         if (SkIRect::Intersects(SkIRect::MakeSize(this->getDeviceSize()),
                                 SkIRect::MakeXYWH(x, y, bitmap.width(), bitmap.height()))) {
@@ -748,7 +748,7 @@
     uint32_t configMask = 0;
     for (int i = canvas->countLayerDevices() - 1; i >= 0; --i)
     {
-        SkDevice* device = canvas->getLayerDevice(i);
+        SkBaseDevice* device = canvas->getLayerDevice(i);
         if (device->intersects(bounds))
             configMask |= 1 << device->config();
     }
@@ -849,7 +849,7 @@
     bool isOpaque;
     SkBitmap::Config config = resolve_config(this, ir, flags, &isOpaque);
 
-    SkDevice* device;
+    SkBaseDevice* device;
     if (paint && paint->getImageFilter()) {
         device = this->createCompatibleDevice(config, ir.width(), ir.height(),
                                               isOpaque);
@@ -981,7 +981,7 @@
     LOOPER_END
 }
 
-void SkCanvas::internalDrawDevice(SkDevice* srcDev, int x, int y,
+void SkCanvas::internalDrawDevice(SkBaseDevice* srcDev, int x, int y,
                                   const SkPaint* paint) {
     SkPaint tmp;
     if (NULL == paint) {
@@ -991,7 +991,7 @@
 
     LOOPER_BEGIN_DRAWDEVICE(*paint, SkDrawFilter::kBitmap_Type)
     while (iter.next()) {
-        SkDevice* dstDev = iter.fDevice;
+        SkBaseDevice* dstDev = iter.fDevice;
         paint = &looper.paint();
         SkImageFilter* filter = paint->getImageFilter();
         SkIPoint pos = { x - iter.getX(), y - iter.getY() };
@@ -1164,7 +1164,7 @@
             return currClip->op(clip, op);
         }
     } else {
-        const SkDevice* device = canvas->getDevice();
+        const SkBaseDevice* device = canvas->getDevice();
         if (!device) {
             return currClip->setEmpty();
         }
@@ -1358,7 +1358,7 @@
 #ifdef SK_DEBUG
 void SkCanvas::validateClip() const {
     // construct clipRgn from the clipstack
-    const SkDevice* device = this->getDevice();
+    const SkBaseDevice* device = this->getDevice();
     if (!device) {
         SkASSERT(this->getTotalClip().isEmpty());
         return;
@@ -1543,10 +1543,10 @@
     return fMCRec->fRasterClip->forceGetBW();
 }
 
-SkDevice* SkCanvas::createLayerDevice(SkBitmap::Config config,
+SkBaseDevice* SkCanvas::createLayerDevice(SkBitmap::Config config,
                                       int width, int height,
                                       bool isOpaque) {
-    SkDevice* device = this->getTopDevice();
+    SkBaseDevice* device = this->getTopDevice();
     if (device) {
         return device->createCompatibleDeviceForSaveLayer(config, width, height,
                                                           isOpaque);
@@ -1555,10 +1555,10 @@
     }
 }
 
-SkDevice* SkCanvas::createCompatibleDevice(SkBitmap::Config config,
+SkBaseDevice* SkCanvas::createCompatibleDevice(SkBitmap::Config config,
                                            int width, int height,
                                            bool isOpaque) {
-    SkDevice* device = this->getDevice();
+    SkBaseDevice* device = this->getDevice();
     if (device) {
         return device->createCompatibleDevice(config, width, height, isOpaque);
     } else {
@@ -1874,8 +1874,8 @@
 
 class SkDeviceFilteredPaint {
 public:
-    SkDeviceFilteredPaint(SkDevice* device, const SkPaint& paint) {
-        SkDevice::TextFlags flags;
+    SkDeviceFilteredPaint(SkBaseDevice* device, const SkPaint& paint) {
+        SkBaseDevice::TextFlags flags;
         if (device->filterTextFlags(paint, &flags)) {
             SkPaint* newPaint = fLazy.set(paint);
             newPaint->setFlags(flags.fFlags);
@@ -2203,7 +2203,7 @@
     fDone = !fImpl->next();
 }
 
-SkDevice* SkCanvas::LayerIter::device() const {
+SkBaseDevice* SkCanvas::LayerIter::device() const {
     return fImpl->getDevice();
 }
 
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index d06f6e6..428c9ca 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -15,7 +15,8 @@
 #include "SkRRect.h"
 #include "SkShader.h"
 
-SK_DEFINE_INST_COUNT(SkDevice)
+SK_DEFINE_INST_COUNT(SkBaseDevice)
+SK_DEFINE_INST_COUNT(SkBitmapDevice)
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -24,20 +25,13 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkDevice::SkDevice(const SkBitmap& bitmap)
-    : fBitmap(bitmap), fLeakyProperties(SkDeviceProperties::MakeDefault())
-#ifdef SK_DEBUG
-    , fAttachedToCanvas(false)
-#endif
-{
-    fOrigin.setZero();
-    fMetaData = NULL;
-
+SkBitmapDevice::SkBitmapDevice(const SkBitmap& bitmap) 
+    : fBitmap(bitmap) {
     SkASSERT(SkBitmap::kARGB_4444_Config != bitmap.config());
 }
 
-SkDevice::SkDevice(const SkBitmap& bitmap, const SkDeviceProperties& deviceProperties)
-    : fBitmap(bitmap), fLeakyProperties(deviceProperties)
+SkBaseDevice::SkBaseDevice()
+    : fLeakyProperties(SkDeviceProperties::MakeDefault()) 
 #ifdef SK_DEBUG
     , fAttachedToCanvas(false)
 #endif
@@ -46,25 +40,12 @@
     fMetaData = NULL;
 }
 
-SkDevice::SkDevice(SkBitmap::Config config, int width, int height, bool isOpaque)
-    : fLeakyProperties(SkDeviceProperties::MakeDefault())
-#ifdef SK_DEBUG
-    , fAttachedToCanvas(false)
-#endif
-{
-    fOrigin.setZero();
-    fMetaData = NULL;
-
-    fBitmap.setConfig(config, width, height);
-    fBitmap.allocPixels();
-    fBitmap.setIsOpaque(isOpaque);
-    if (!isOpaque) {
-        fBitmap.eraseColor(SK_ColorTRANSPARENT);
-    }
+SkBitmapDevice::SkBitmapDevice(const SkBitmap& bitmap, const SkDeviceProperties& deviceProperties)
+    : SkBaseDevice(deviceProperties)
+    , fBitmap(bitmap) {
 }
 
-SkDevice::SkDevice(SkBitmap::Config config, int width, int height, bool isOpaque,
-                   const SkDeviceProperties& deviceProperties)
+SkBaseDevice::SkBaseDevice(const SkDeviceProperties& deviceProperties)
     : fLeakyProperties(deviceProperties)
 #ifdef SK_DEBUG
     , fAttachedToCanvas(false)
@@ -72,6 +53,20 @@
 {
     fOrigin.setZero();
     fMetaData = NULL;
+}
+
+SkBitmapDevice::SkBitmapDevice(SkBitmap::Config config, int width, int height, bool isOpaque) {
+    fBitmap.setConfig(config, width, height);
+    fBitmap.allocPixels();
+    fBitmap.setIsOpaque(isOpaque);
+    if (!isOpaque) {
+        fBitmap.eraseColor(SK_ColorTRANSPARENT);
+    }
+}
+
+SkBitmapDevice::SkBitmapDevice(SkBitmap::Config config, int width, int height, bool isOpaque,
+                         const SkDeviceProperties& deviceProperties)
+    : SkBaseDevice(deviceProperties) {
 
     fBitmap.setConfig(config, width, height);
     fBitmap.allocPixels();
@@ -81,39 +76,43 @@
     }
 }
 
-SkDevice::~SkDevice() {
+SkBaseDevice::~SkBaseDevice() {
     delete fMetaData;
 }
 
-void SkDevice::replaceBitmapBackendForRasterSurface(const SkBitmap& bm) {
+SkBitmapDevice::~SkBitmapDevice() {
+}
+
+void SkBitmapDevice::replaceBitmapBackendForRasterSurface(const SkBitmap& bm) {
     SkASSERT(bm.width() == fBitmap.width());
     SkASSERT(bm.height() == fBitmap.height());
     fBitmap = bm;   // intent is to use bm's pixelRef (and rowbytes/config)
     fBitmap.lockPixels();
 }
 
-SkDevice* SkDevice::createCompatibleDevice(SkBitmap::Config config,
-                                           int width, int height,
-                                           bool isOpaque) {
+SkBaseDevice* SkBaseDevice::createCompatibleDevice(SkBitmap::Config config,
+                                                   int width, int height,
+                                                   bool isOpaque) {
     return this->onCreateCompatibleDevice(config, width, height,
                                           isOpaque, kGeneral_Usage);
 }
 
-SkDevice* SkDevice::createCompatibleDeviceForSaveLayer(SkBitmap::Config config,
-                                                       int width, int height,
-                                                       bool isOpaque) {
+SkBaseDevice* SkBaseDevice::createCompatibleDeviceForSaveLayer(SkBitmap::Config config,
+                                                               int width, int height,
+                                                               bool isOpaque) {
     return this->onCreateCompatibleDevice(config, width, height,
                                           isOpaque, kSaveLayer_Usage);
 }
 
-SkDevice* SkDevice::onCreateCompatibleDevice(SkBitmap::Config config,
-                                             int width, int height,
-                                             bool isOpaque,
-                                             Usage usage) {
-    return SkNEW_ARGS(SkDevice,(config, width, height, isOpaque, fLeakyProperties));
+SkBaseDevice* SkBitmapDevice::onCreateCompatibleDevice(SkBitmap::Config config,
+                                                       int width, int height,
+                                                       bool isOpaque,
+                                                       Usage usage) {
+    return SkNEW_ARGS(SkBitmapDevice,(config, width, height, isOpaque, 
+                                      this->getDeviceProperties()));
 }
 
-SkMetaData& SkDevice::getMetaData() {
+SkMetaData& SkBaseDevice::getMetaData() {
     // metadata users are rare, so we lazily allocate it. If that changes we
     // can decide to just make it a field in the device (rather than a ptr)
     if (NULL == fMetaData) {
@@ -122,61 +121,60 @@
     return *fMetaData;
 }
 
-void SkDevice::lockPixels() {
+void SkBitmapDevice::lockPixels() {
     if (fBitmap.lockPixelsAreWritable()) {
         fBitmap.lockPixels();
     }
 }
 
-void SkDevice::unlockPixels() {
+void SkBitmapDevice::unlockPixels() {
     if (fBitmap.lockPixelsAreWritable()) {
         fBitmap.unlockPixels();
     }
 }
 
-const SkBitmap& SkDevice::accessBitmap(bool changePixels) {
-    const SkBitmap& bitmap = this->onAccessBitmap(&fBitmap);
+const SkBitmap& SkBaseDevice::accessBitmap(bool changePixels) {
+    const SkBitmap& bitmap = this->onAccessBitmap();
     if (changePixels) {
         bitmap.notifyPixelsChanged();
     }
     return bitmap;
 }
 
-void SkDevice::getGlobalBounds(SkIRect* bounds) const {
+void SkBitmapDevice::getGlobalBounds(SkIRect* bounds) const {
     if (bounds) {
-        bounds->setXYWH(fOrigin.x(), fOrigin.y(),
+        const SkIPoint& origin = this->getOrigin();
+        bounds->setXYWH(origin.x(), origin.y(),
                         fBitmap.width(), fBitmap.height());
     }
 }
 
-void SkDevice::clear(SkColor color) {
+void SkBitmapDevice::clear(SkColor color) {
     fBitmap.eraseColor(color);
 }
 
-const SkBitmap& SkDevice::onAccessBitmap(SkBitmap* bitmap) {return *bitmap;}
-
-void SkDevice::setMatrixClip(const SkMatrix& matrix, const SkRegion& region,
-                             const SkClipStack& clipStack) {
+const SkBitmap& SkBitmapDevice::onAccessBitmap() {
+    return fBitmap;
 }
 
-bool SkDevice::canHandleImageFilter(SkImageFilter*) {
+bool SkBitmapDevice::canHandleImageFilter(SkImageFilter*) {
     return false;
 }
 
-bool SkDevice::filterImage(SkImageFilter* filter, const SkBitmap& src,
-                           const SkMatrix& ctm, SkBitmap* result,
-                           SkIPoint* offset) {
+bool SkBitmapDevice::filterImage(SkImageFilter* filter, const SkBitmap& src,
+                                 const SkMatrix& ctm, SkBitmap* result,
+                                 SkIPoint* offset) {
     return false;
 }
 
-bool SkDevice::allowImageFilter(SkImageFilter*) {
+bool SkBitmapDevice::allowImageFilter(SkImageFilter*) {
     return true;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-bool SkDevice::readPixels(SkBitmap* bitmap, int x, int y,
-                          SkCanvas::Config8888 config8888) {
+bool SkBaseDevice::readPixels(SkBitmap* bitmap, int x, int y,
+                              SkCanvas::Config8888 config8888) {
     if (SkBitmap::kARGB_8888_Config != bitmap->config() ||
         NULL != bitmap->getTexture()) {
         return false;
@@ -220,21 +218,21 @@
 }
 
 #if SK_PMCOLOR_BYTE_ORDER(B,G,R,A)
-    const SkCanvas::Config8888 SkDevice::kPMColorAlias =
+    const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias =
         SkCanvas::kBGRA_Premul_Config8888;
 #elif SK_PMCOLOR_BYTE_ORDER(R,G,B,A)
-    const SkCanvas::Config8888 SkDevice::kPMColorAlias =
+    const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias =
         SkCanvas::kRGBA_Premul_Config8888;
 #else
-    const SkCanvas::Config8888 SkDevice::kPMColorAlias =
+    const SkCanvas::Config8888 SkBaseDevice::kPMColorAlias =
         (SkCanvas::Config8888) -1;
 #endif
 
 #include <SkConfig8888.h>
 
-bool SkDevice::onReadPixels(const SkBitmap& bitmap,
-                            int x, int y,
-                            SkCanvas::Config8888 config8888) {
+bool SkBitmapDevice::onReadPixels(const SkBitmap& bitmap,
+                                  int x, int y,
+                                  SkCanvas::Config8888 config8888) {
     SkASSERT(SkBitmap::kARGB_8888_Config == bitmap.config());
     SkASSERT(!bitmap.isNull());
     SkASSERT(SkIRect::MakeWH(this->width(), this->height()).contains(SkIRect::MakeXYWH(x, y, bitmap.width(), bitmap.height())));
@@ -257,9 +255,9 @@
     return true;
 }
 
-void SkDevice::writePixels(const SkBitmap& bitmap,
-                           int x, int y,
-                           SkCanvas::Config8888 config8888) {
+void SkBitmapDevice::writePixels(const SkBitmap& bitmap,
+                                 int x, int y,
+                                 SkCanvas::Config8888 config8888) {
     if (bitmap.isNull() || bitmap.getTexture()) {
         return;
     }
@@ -328,22 +326,22 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
-void SkDevice::drawPaint(const SkDraw& draw, const SkPaint& paint) {
+void SkBitmapDevice::drawPaint(const SkDraw& draw, const SkPaint& paint) {
     draw.drawPaint(paint);
 }
 
-void SkDevice::drawPoints(const SkDraw& draw, SkCanvas::PointMode mode, size_t count,
-                          const SkPoint pts[], const SkPaint& paint) {
+void SkBitmapDevice::drawPoints(const SkDraw& draw, SkCanvas::PointMode mode, size_t count,
+                                const SkPoint pts[], const SkPaint& paint) {
     CHECK_FOR_NODRAW_ANNOTATION(paint);
     draw.drawPoints(mode, count, pts, paint);
 }
 
-void SkDevice::drawRect(const SkDraw& draw, const SkRect& r, const SkPaint& paint) {
+void SkBitmapDevice::drawRect(const SkDraw& draw, const SkRect& r, const SkPaint& paint) {
     CHECK_FOR_NODRAW_ANNOTATION(paint);
     draw.drawRect(r, paint);
 }
 
-void SkDevice::drawOval(const SkDraw& draw, const SkRect& oval, const SkPaint& paint) {
+void SkBitmapDevice::drawOval(const SkDraw& draw, const SkRect& oval, const SkPaint& paint) {
     CHECK_FOR_NODRAW_ANNOTATION(paint);
 
     SkPath path;
@@ -353,7 +351,7 @@
     this->drawPath(draw, path, paint, NULL, true);
 }
 
-void SkDevice::drawRRect(const SkDraw& draw, const SkRRect& rrect, const SkPaint& paint) {
+void SkBitmapDevice::drawRRect(const SkDraw& draw, const SkRRect& rrect, const SkPaint& paint) {
     CHECK_FOR_NODRAW_ANNOTATION(paint);
 
     SkPath  path;
@@ -363,22 +361,22 @@
     this->drawPath(draw, path, paint, NULL, true);
 }
 
-void SkDevice::drawPath(const SkDraw& draw, const SkPath& path,
-                        const SkPaint& paint, const SkMatrix* prePathMatrix,
-                        bool pathIsMutable) {
+void SkBitmapDevice::drawPath(const SkDraw& draw, const SkPath& path,
+                              const SkPaint& paint, const SkMatrix* prePathMatrix,
+                              bool pathIsMutable) {
     CHECK_FOR_NODRAW_ANNOTATION(paint);
     draw.drawPath(path, paint, prePathMatrix, pathIsMutable);
 }
 
-void SkDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
-                          const SkMatrix& matrix, const SkPaint& paint) {
+void SkBitmapDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
+                                const SkMatrix& matrix, const SkPaint& paint) {
     draw.drawBitmap(bitmap, matrix, paint);
 }
 
-void SkDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
-                              const SkRect* src, const SkRect& dst,
-                              const SkPaint& paint,
-                              SkCanvas::DrawBitmapRectFlags flags) {
+void SkBitmapDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
+                                    const SkRect* src, const SkRect& dst,
+                                    const SkPaint& paint,
+                                    SkCanvas::DrawBitmapRectFlags flags) {
     SkMatrix    matrix;
     SkRect      bitmapBounds, tmpSrc, tmpDst;
     SkBitmap    tmpBitmap;
@@ -462,56 +460,56 @@
     this->drawRect(draw, *dstPtr, paintWithShader);
 }
 
-void SkDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap,
-                              int x, int y, const SkPaint& paint) {
+void SkBitmapDevice::drawSprite(const SkDraw& draw, const SkBitmap& bitmap,
+                                int x, int y, const SkPaint& paint) {
     draw.drawSprite(bitmap, x, y, paint);
 }
 
-void SkDevice::drawText(const SkDraw& draw, const void* text, size_t len,
-                            SkScalar x, SkScalar y, const SkPaint& paint) {
+void SkBitmapDevice::drawText(const SkDraw& draw, const void* text, size_t len,
+                              SkScalar x, SkScalar y, const SkPaint& paint) {
     draw.drawText((const char*)text, len, x, y, paint);
 }
 
-void SkDevice::drawPosText(const SkDraw& draw, const void* text, size_t len,
-                               const SkScalar xpos[], SkScalar y,
-                               int scalarsPerPos, const SkPaint& paint) {
+void SkBitmapDevice::drawPosText(const SkDraw& draw, const void* text, size_t len,
+                                 const SkScalar xpos[], SkScalar y,
+                                 int scalarsPerPos, const SkPaint& paint) {
     draw.drawPosText((const char*)text, len, xpos, y, scalarsPerPos, paint);
 }
 
-void SkDevice::drawTextOnPath(const SkDraw& draw, const void* text,
-                                  size_t len, const SkPath& path,
-                                  const SkMatrix* matrix,
-                                  const SkPaint& paint) {
+void SkBitmapDevice::drawTextOnPath(const SkDraw& draw, const void* text,
+                                    size_t len, const SkPath& path,
+                                    const SkMatrix* matrix,
+                                    const SkPaint& paint) {
     draw.drawTextOnPath((const char*)text, len, path, matrix, paint);
 }
 
 #ifdef SK_BUILD_FOR_ANDROID
-void SkDevice::drawPosTextOnPath(const SkDraw& draw, const void* text, size_t len,
-                                     const SkPoint pos[], const SkPaint& paint,
-                                     const SkPath& path, const SkMatrix* matrix) {
+void SkBitmapDevice::drawPosTextOnPath(const SkDraw& draw, const void* text, size_t len,
+                                       const SkPoint pos[], const SkPaint& paint,
+                                       const SkPath& path, const SkMatrix* matrix) {
     draw.drawPosTextOnPath((const char*)text, len, pos, paint, path, matrix);
 }
 #endif
 
-void SkDevice::drawVertices(const SkDraw& draw, SkCanvas::VertexMode vmode,
-                                int vertexCount,
-                                const SkPoint verts[], const SkPoint textures[],
-                                const SkColor colors[], SkXfermode* xmode,
-                                const uint16_t indices[], int indexCount,
-                                const SkPaint& paint) {
+void SkBitmapDevice::drawVertices(const SkDraw& draw, SkCanvas::VertexMode vmode,
+                                  int vertexCount,
+                                  const SkPoint verts[], const SkPoint textures[],
+                                  const SkColor colors[], SkXfermode* xmode,
+                                  const uint16_t indices[], int indexCount,
+                                  const SkPaint& paint) {
     draw.drawVertices(vmode, vertexCount, verts, textures, colors, xmode,
                       indices, indexCount, paint);
 }
 
-void SkDevice::drawDevice(const SkDraw& draw, SkDevice* device,
-                              int x, int y, const SkPaint& paint) {
+void SkBitmapDevice::drawDevice(const SkDraw& draw, SkBaseDevice* device,
+                                int x, int y, const SkPaint& paint) {
     const SkBitmap& src = device->accessBitmap(false);
     draw.drawSprite(src, x, y, paint);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-bool SkDevice::filterTextFlags(const SkPaint& paint, TextFlags* flags) {
+bool SkBitmapDevice::filterTextFlags(const SkPaint& paint, TextFlags* flags) {
     if (!paint.isLCDRenderText() || !paint.isAntiAlias()) {
         // we're cool with the paint as is
         return false;
diff --git a/src/core/SkDeviceImageFilterProxy.h b/src/core/SkDeviceImageFilterProxy.h
index 98a120c..03fcb68 100644
--- a/src/core/SkDeviceImageFilterProxy.h
+++ b/src/core/SkDeviceImageFilterProxy.h
@@ -12,9 +12,9 @@
 
 class SkDeviceImageFilterProxy : public SkImageFilter::Proxy {
 public:
-    SkDeviceImageFilterProxy(SkDevice* device) : fDevice(device) {}
+    SkDeviceImageFilterProxy(SkBaseDevice* device) : fDevice(device) {}
 
-    virtual SkDevice* createDevice(int w, int h) SK_OVERRIDE {
+    virtual SkBaseDevice* createDevice(int w, int h) SK_OVERRIDE {
         return fDevice->createCompatibleDevice(SkBitmap::kARGB_8888_Config,
                                                w, h, false);
     }
@@ -28,7 +28,7 @@
     }
 
 private:
-    SkDevice* fDevice;
+    SkBaseDevice* fDevice;
 };
 
 #endif
diff --git a/src/core/SkPicture.cpp b/src/core/SkPicture.cpp
index 097e0ea..416b912 100644
--- a/src/core/SkPicture.cpp
+++ b/src/core/SkPicture.cpp
@@ -205,7 +205,7 @@
 
     SkBitmap bm;
     bm.setConfig(SkBitmap::kNo_Config, width, height);
-    SkAutoTUnref<SkDevice> dev(SkNEW_ARGS(SkDevice, (bm)));
+    SkAutoTUnref<SkBaseDevice> dev(SkNEW_ARGS(SkBitmapDevice, (bm)));
 
     // Must be set before calling createBBoxHierarchy
     fWidth = width;
diff --git a/src/core/SkPictureRecord.cpp b/src/core/SkPictureRecord.cpp
index 0ec9eaf..ea1a40f 100644
--- a/src/core/SkPictureRecord.cpp
+++ b/src/core/SkPictureRecord.cpp
@@ -28,7 +28,7 @@
 static const uint32_t kSaveLayerNoBoundsSize = 4 * kUInt32Size;
 static const uint32_t kSaveLayerWithBoundsSize = 4 * kUInt32Size + sizeof(SkRect);
 
-SkPictureRecord::SkPictureRecord(uint32_t flags, SkDevice* device) :
+SkPictureRecord::SkPictureRecord(uint32_t flags, SkBaseDevice* device) :
         INHERITED(device),
         fBoundingHierarchy(NULL),
         fStateTree(NULL),
@@ -138,7 +138,7 @@
     return gPaintOffsets[op] * sizeof(uint32_t) + overflow;
 }
 
-SkDevice* SkPictureRecord::setDevice(SkDevice* device) {
+SkBaseDevice* SkPictureRecord::setDevice(SkBaseDevice* device) {
     SkASSERT(!"eeek, don't try to change the device on a recording canvas");
     return this->INHERITED::setDevice(device);
 }
diff --git a/src/core/SkPictureRecord.h b/src/core/SkPictureRecord.h
index 51547a4..34cd925 100644
--- a/src/core/SkPictureRecord.h
+++ b/src/core/SkPictureRecord.h
@@ -30,10 +30,10 @@
 
 class SkPictureRecord : public SkCanvas {
 public:
-    SkPictureRecord(uint32_t recordFlags, SkDevice*);
+    SkPictureRecord(uint32_t recordFlags, SkBaseDevice*);
     virtual ~SkPictureRecord();
 
-    virtual SkDevice* setDevice(SkDevice* device) SK_OVERRIDE;
+    virtual SkBaseDevice* setDevice(SkBaseDevice* device) SK_OVERRIDE;
 
     virtual int save(SaveFlags) SK_OVERRIDE;
     virtual int saveLayer(const SkRect* bounds, const SkPaint*, SaveFlags) SK_OVERRIDE;
diff --git a/src/device/xps/SkXPSDevice.cpp b/src/device/xps/SkXPSDevice.cpp
index 442a51f..311c09f 100644
--- a/src/device/xps/SkXPSDevice.cpp
+++ b/src/device/xps/SkXPSDevice.cpp
@@ -111,7 +111,7 @@
 }
 
 SkXPSDevice::SkXPSDevice()
-    : SkDevice(make_fake_bitmap(10000, 10000))
+    : SkBitmapDevice(make_fake_bitmap(10000, 10000))
     , fCurrentPage(0) {
 }
 
@@ -2375,7 +2375,7 @@
      d.drawTextOnPath((const char*)text, len, path, matrix, paint);
 }
 
-void SkXPSDevice::drawDevice(const SkDraw& d, SkDevice* dev,
+void SkXPSDevice::drawDevice(const SkDraw& d, SkBaseDevice* dev,
                              int x, int y,
                              const SkPaint&) {
     SkXPSDevice* that = static_cast<SkXPSDevice*>(dev);
@@ -2407,11 +2407,11 @@
     return false;
 }
 
-SkDevice* SkXPSDevice::onCreateCompatibleDevice(SkBitmap::Config config,
-                                                int width, int height,
-                                                bool isOpaque,
-                                                Usage usage) {
-    if (SkDevice::kGeneral_Usage == usage) {
+SkBaseDevice* SkXPSDevice::onCreateCompatibleDevice(SkBitmap::Config config,
+                                                    int width, int height,
+                                                    bool isOpaque,
+                                                    Usage usage) {
+    if (SkBaseDevice::kGeneral_Usage == usage) {
         return NULL;
         SK_CRASH();
         //To what stream do we write?
@@ -2425,7 +2425,7 @@
 }
 
 SkXPSDevice::SkXPSDevice(IXpsOMObjectFactory* xpsFactory)
-    : SkDevice(make_fake_bitmap(10000, 10000))
+    : SkBitmapDevice(make_fake_bitmap(10000, 10000))
     , fCurrentPage(0) {
 
     HRVM(CoCreateInstance(
diff --git a/src/effects/SkColorFilterImageFilter.cpp b/src/effects/SkColorFilterImageFilter.cpp
index 9c2c54e..6ef88e3 100755
--- a/src/effects/SkColorFilterImageFilter.cpp
+++ b/src/effects/SkColorFilterImageFilter.cpp
@@ -111,7 +111,7 @@
         return false;
     }
 
-    SkAutoTUnref<SkDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
+    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
     SkCanvas canvas(device.get());
     SkPaint paint;
 
diff --git a/src/effects/SkDropShadowImageFilter.cpp b/src/effects/SkDropShadowImageFilter.cpp
index b8bbfd6..75a8668 100644
--- a/src/effects/SkDropShadowImageFilter.cpp
+++ b/src/effects/SkDropShadowImageFilter.cpp
@@ -46,7 +46,7 @@
     if (getInput(0) && !getInput(0)->filterImage(proxy, source, matrix, &src, loc))
         return false;
 
-    SkAutoTUnref<SkDevice> device(proxy->createDevice(src.width(), src.height()));
+    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(src.width(), src.height()));
     SkCanvas canvas(device.get());
 
     SkAutoTUnref<SkImageFilter> blurFilter(new SkBlurImageFilter(fSigma, fSigma));
diff --git a/src/effects/SkMergeImageFilter.cpp b/src/effects/SkMergeImageFilter.cpp
index 0c1388f..0c47c91 100755
--- a/src/effects/SkMergeImageFilter.cpp
+++ b/src/effects/SkMergeImageFilter.cpp
@@ -109,7 +109,7 @@
     const int x0 = bounds.left();
     const int y0 = bounds.top();
 
-    SkAutoTUnref<SkDevice> dst(proxy->createDevice(bounds.width(), bounds.height()));
+    SkAutoTUnref<SkBaseDevice> dst(proxy->createDevice(bounds.width(), bounds.height()));
     if (NULL == dst) {
         return false;
     }
diff --git a/src/effects/SkRectShaderImageFilter.cpp b/src/effects/SkRectShaderImageFilter.cpp
index ada861f..2ee1d4a 100644
--- a/src/effects/SkRectShaderImageFilter.cpp
+++ b/src/effects/SkRectShaderImageFilter.cpp
@@ -56,8 +56,8 @@
         return false;
     }
 
-    SkAutoTUnref<SkDevice> device(proxy->createDevice(SkScalarCeilToInt(rect.width()),
-                                                      SkScalarCeilToInt(rect.height())));
+    SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(SkScalarCeilToInt(rect.width()),
+                                                          SkScalarCeilToInt(rect.height())));
     SkCanvas canvas(device.get());
     SkPaint paint;
     paint.setShader(fShader);
diff --git a/src/effects/SkTestImageFilters.cpp b/src/effects/SkTestImageFilters.cpp
index a919ded..788c33a 100755
--- a/src/effects/SkTestImageFilters.cpp
+++ b/src/effects/SkTestImageFilters.cpp
@@ -9,11 +9,11 @@
 // with the following:
 //
 //  SkCanvas canvas(device);
-//  SkAutoTUnref<SkDevice> aur(device);
+//  SkAutoTUnref<SkBaseDevice> aur(device);
 //
 class OwnDeviceCanvas : public SkCanvas {
 public:
-    OwnDeviceCanvas(SkDevice* device) : SkCanvas(device) {
+    OwnDeviceCanvas(SkBaseDevice* device) : SkCanvas(device) {
         SkSafeUnref(device);
     }
 };
@@ -41,7 +41,7 @@
 
     // downsample
     {
-        SkDevice* dev = proxy->createDevice(dstW, dstH);
+        SkBaseDevice* dev = proxy->createDevice(dstW, dstH);
         if (NULL == dev) {
             return false;
         }
@@ -56,7 +56,7 @@
 
     // upscale
     {
-        SkDevice* dev = proxy->createDevice(src.width(), src.height());
+        SkBaseDevice* dev = proxy->createDevice(src.width(), src.height());
         if (NULL == dev) {
             return false;
         }
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index d96ffb8..4a89ef3 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -161,12 +161,12 @@
 }
 
 SkGpuDevice::SkGpuDevice(GrContext* context, GrTexture* texture)
-: SkDevice(make_bitmap(context, texture->asRenderTarget())) {
+    : SkBitmapDevice(make_bitmap(context, texture->asRenderTarget())) {
     this->initFromRenderTarget(context, texture->asRenderTarget(), false);
 }
 
 SkGpuDevice::SkGpuDevice(GrContext* context, GrRenderTarget* renderTarget)
-: SkDevice(make_bitmap(context, renderTarget)) {
+    : SkBitmapDevice(make_bitmap(context, renderTarget)) {
     this->initFromRenderTarget(context, renderTarget, false);
 }
 
@@ -203,7 +203,7 @@
                          int width,
                          int height,
                          int sampleCount)
-    : SkDevice(config, width, height, false /*isOpaque*/) {
+    : SkBitmapDevice(config, width, height, false /*isOpaque*/) {
 
     fDrawProcs = NULL;
 
@@ -1436,7 +1436,7 @@
     fContext->drawRectToRect(grPaint, dstRect, paintRect, &m);
 }
 
-static bool filter_texture(SkDevice* device, GrContext* context,
+static bool filter_texture(SkBaseDevice* device, GrContext* context,
                            GrTexture* texture, SkImageFilter* filter,
                            int w, int h, const SkMatrix& ctm, SkBitmap* result,
                            SkIPoint* offset) {
@@ -1535,7 +1535,7 @@
     this->drawBitmapCommon(draw, bitmap, &tmpSrc, matrix, paint, flags);
 }
 
-void SkGpuDevice::drawDevice(const SkDraw& draw, SkDevice* device,
+void SkGpuDevice::drawDevice(const SkDraw& draw, SkBaseDevice* device,
                              int x, int y, const SkPaint& paint) {
     // clear of the source device must occur before CHECK_SHOULD_DRAW
     SkGpuDevice* dev = static_cast<SkGpuDevice*>(device);
@@ -1818,10 +1818,10 @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkDevice* SkGpuDevice::onCreateCompatibleDevice(SkBitmap::Config config,
-                                                int width, int height,
-                                                bool isOpaque,
-                                                Usage usage) {
+SkBaseDevice* SkGpuDevice::onCreateCompatibleDevice(SkBitmap::Config config,
+                                                    int width, int height,
+                                                    bool isOpaque,
+                                                    Usage usage) {
     GrTextureDesc desc;
     desc.fConfig = fRenderTarget->config();
     desc.fFlags = kRenderTarget_GrTextureFlagBit;
@@ -1854,7 +1854,7 @@
 SkGpuDevice::SkGpuDevice(GrContext* context,
                          GrTexture* texture,
                          bool needClear)
-    : SkDevice(make_bitmap(context, texture->asRenderTarget())) {
+    : SkBitmapDevice(make_bitmap(context, texture->asRenderTarget())) {
 
     SkASSERT(texture && texture->asRenderTarget());
     // This constructor is called from onCreateCompatibleDevice. It has locked the RT in the texture
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index a24c4ec..02dda02 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -566,10 +566,10 @@
     }
 }
 
-SkDevice* SkPDFDevice::onCreateCompatibleDevice(SkBitmap::Config config,
-                                                int width, int height,
-                                                bool isOpaque,
-                                                Usage usage) {
+SkBaseDevice* SkPDFDevice::onCreateCompatibleDevice(SkBitmap::Config config,
+                                                    int width, int height,
+                                                    bool isOpaque,
+                                                    Usage usage) {
     SkMatrix initialTransform;
     initialTransform.reset();
     SkISize size = SkISize::Make(width, height);
@@ -672,7 +672,7 @@
 // TODO(vandebo) change pageSize to SkSize.
 SkPDFDevice::SkPDFDevice(const SkISize& pageSize, const SkISize& contentSize,
                          const SkMatrix& initialTransform)
-    : SkDevice(makeContentBitmap(contentSize, &initialTransform)),
+    : SkBitmapDevice(makeContentBitmap(contentSize, &initialTransform)),
       fPageSize(pageSize),
       fContentSize(contentSize),
       fLastContentEntry(NULL),
@@ -696,7 +696,7 @@
 SkPDFDevice::SkPDFDevice(const SkISize& layerSize,
                          const SkClipStack& existingClipStack,
                          const SkRegion& existingClipRegion)
-    : SkDevice(makeContentBitmap(layerSize, NULL)),
+    : SkBitmapDevice(makeContentBitmap(layerSize, NULL)),
       fPageSize(layerSize),
       fContentSize(layerSize),
       fExistingClipStack(existingClipStack),
@@ -1153,11 +1153,11 @@
     NOT_IMPLEMENTED("drawVerticies", true);
 }
 
-void SkPDFDevice::drawDevice(const SkDraw& d, SkDevice* device, int x, int y,
+void SkPDFDevice::drawDevice(const SkDraw& d, SkBaseDevice* device, int x, int y,
                              const SkPaint& paint) {
     if ((device->getDeviceCapabilities() & kVector_Capability) == 0) {
         // If we somehow get a raster device, do what our parent would do.
-        SkDevice::drawDevice(d, device, x, y, paint);
+        INHERITED::drawDevice(d, device, x, y, paint);
         return;
     }
 
diff --git a/src/pipe/SkGPipeWrite.cpp b/src/pipe/SkGPipeWrite.cpp
index f646bab..647b15c 100644
--- a/src/pipe/SkGPipeWrite.cpp
+++ b/src/pipe/SkGPipeWrite.cpp
@@ -432,7 +432,7 @@
     // We don't allocate pixels for the bitmap
     SkBitmap bitmap;
     bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
-    SkDevice* device = SkNEW_ARGS(SkDevice, (bitmap));
+    SkBaseDevice* device = SkNEW_ARGS(SkBitmapDevice, (bitmap));
     this->setDevice(device)->unref();
 
     // Tell the reader the appropriate flags to use.
diff --git a/src/pipe/utils/SamplePipeControllers.cpp b/src/pipe/utils/SamplePipeControllers.cpp
index a23d775..e329886 100644
--- a/src/pipe/utils/SamplePipeControllers.cpp
+++ b/src/pipe/utils/SamplePipeControllers.cpp
@@ -55,7 +55,7 @@
 
         SkDEBUGCODE(bool extracted = )bitmap.extractSubset(&fBitmaps[i], rect);
         SkASSERT(extracted);
-        SkDevice* device = new SkDevice(fBitmaps[i]);
+        SkBaseDevice* device = new SkBitmapDevice(fBitmaps[i]);
         SkCanvas* canvas = new SkCanvas(device);
         device->unref();
         if (initial != NULL) {
diff --git a/src/utils/SkDeferredCanvas.cpp b/src/utils/SkDeferredCanvas.cpp
index e3b761f..41b7c02 100644
--- a/src/utils/SkDeferredCanvas.cpp
+++ b/src/utils/SkDeferredCanvas.cpp
@@ -137,16 +137,16 @@
 //-----------------------------------------------------------------------------
 // DeferredDevice
 //-----------------------------------------------------------------------------
-class DeferredDevice : public SkDevice {
+class DeferredDevice : public SkBitmapDevice {
 public:
-    explicit DeferredDevice(SkDevice* immediateDevice);
+    explicit DeferredDevice(SkBaseDevice* immediateDevice);
     explicit DeferredDevice(SkSurface* surface);
     ~DeferredDevice();
 
     void setNotificationClient(SkDeferredCanvas::NotificationClient* notificationClient);
     SkCanvas* recordingCanvas();
     SkCanvas* immediateCanvas() const {return fImmediateCanvas;}
-    SkDevice* immediateDevice() const {return fImmediateCanvas->getTopDevice();}
+    SkBaseDevice* immediateDevice() const {return fImmediateCanvas->getTopDevice();}
     SkImage* newImageSnapshot();
     void setSurface(SkSurface* surface);
     bool isFreshFrame();
@@ -165,24 +165,24 @@
     virtual int height() const SK_OVERRIDE;
     virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE;
 
-    virtual SkDevice* onCreateCompatibleDevice(SkBitmap::Config config,
-                                               int width, int height,
-                                               bool isOpaque,
-                                               Usage usage) SK_OVERRIDE;
+    virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config config,
+                                                   int width, int height,
+                                                   bool isOpaque,
+                                                   Usage usage) SK_OVERRIDE;
 
     virtual void writePixels(const SkBitmap& bitmap, int x, int y,
                                 SkCanvas::Config8888 config8888) SK_OVERRIDE;
 
 protected:
-    virtual const SkBitmap& onAccessBitmap(SkBitmap*) SK_OVERRIDE;
+    virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE;
     virtual bool onReadPixels(const SkBitmap& bitmap,
                                 int x, int y,
                                 SkCanvas::Config8888 config8888) SK_OVERRIDE;
 
     // The following methods are no-ops on a deferred device
-    virtual bool filterTextFlags(const SkPaint& paint, TextFlags*)
-        SK_OVERRIDE
-        {return false;}
+    virtual bool filterTextFlags(const SkPaint& paint, TextFlags*) SK_OVERRIDE {
+        return false;
+    }
 
     // None of the following drawing methods should ever get called on the
     // deferred device
@@ -234,7 +234,7 @@
                                 SkXfermode* xmode, const uint16_t indices[],
                                 int indexCount, const SkPaint& paint) SK_OVERRIDE
         {SkASSERT(0);}
-    virtual void drawDevice(const SkDraw&, SkDevice*, int x, int y,
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                             const SkPaint&) SK_OVERRIDE
         {SkASSERT(0);}
 private:
@@ -258,11 +258,11 @@
     size_t fBitmapSizeThreshold;
 };
 
-DeferredDevice::DeferredDevice(SkDevice* immediateDevice)
-    : SkDevice(SkBitmap::kNo_Config,
-               immediateDevice->width(), immediateDevice->height(),
-               immediateDevice->isOpaque(),
-               immediateDevice->getDeviceProperties()) {
+DeferredDevice::DeferredDevice(SkBaseDevice* immediateDevice)
+    : SkBitmapDevice(SkBitmap::kNo_Config,
+                     immediateDevice->width(), immediateDevice->height(),
+                     immediateDevice->isOpaque(),
+                     immediateDevice->getDeviceProperties()) {
     fSurface = NULL;
     fImmediateCanvas = SkNEW_ARGS(SkCanvas, (immediateDevice));
     fPipeController.setPlaybackCanvas(fImmediateCanvas);
@@ -270,11 +270,11 @@
 }
 
 DeferredDevice::DeferredDevice(SkSurface* surface)
-    : SkDevice(SkBitmap::kNo_Config,
-               surface->getCanvas()->getDevice()->width(),
-               surface->getCanvas()->getDevice()->height(),
-               surface->getCanvas()->getDevice()->isOpaque(),
-               surface->getCanvas()->getDevice()->getDeviceProperties()) {
+    : SkBitmapDevice(SkBitmap::kNo_Config,
+                     surface->getCanvas()->getDevice()->width(),
+                     surface->getCanvas()->getDevice()->height(),
+                     surface->getCanvas()->getDevice()->isOpaque(),
+                     surface->getCanvas()->getDevice()->getDeviceProperties()) {
     fMaxRecordingStorageBytes = kDefaultMaxRecordingStorageBytes;
     fNotificationClient = NULL;
     fImmediateCanvas = NULL;
@@ -492,12 +492,12 @@
     }
 }
 
-const SkBitmap& DeferredDevice::onAccessBitmap(SkBitmap*) {
+const SkBitmap& DeferredDevice::onAccessBitmap() {
     this->flushPendingCommands(kNormal_PlaybackMode);
     return immediateDevice()->accessBitmap(false);
 }
 
-SkDevice* DeferredDevice::onCreateCompatibleDevice(
+SkBaseDevice* DeferredDevice::onCreateCompatibleDevice(
     SkBitmap::Config config, int width, int height, bool isOpaque,
     Usage usage) {
 
@@ -555,7 +555,7 @@
     return SkNEW_ARGS(SkDeferredCanvas, (deferredDevice));
 }
 
-SkDeferredCanvas* SkDeferredCanvas::Create(SkDevice* device) {
+SkDeferredCanvas* SkDeferredCanvas::Create(SkBaseDevice* device) {
     SkAutoTUnref<DeferredDevice> deferredDevice(SkNEW_ARGS(DeferredDevice, (device)));
     return SkNEW_ARGS(SkDeferredCanvas, (deferredDevice));
 }
diff --git a/src/utils/SkPictureUtils.cpp b/src/utils/SkPictureUtils.cpp
index 87a4057..8c0aca8 100644
--- a/src/utils/SkPictureUtils.cpp
+++ b/src/utils/SkPictureUtils.cpp
@@ -47,7 +47,7 @@
  *  It should never actually draw anything, so there need not be any pixels
  *  behind its device-bitmap.
  */
-class GatherPixelRefDevice : public SkDevice {
+class GatherPixelRefDevice : public SkBitmapDevice {
 private:
     PixelRefSet*  fPRSet;
 
@@ -70,7 +70,7 @@
     }
 
 public:
-    GatherPixelRefDevice(const SkBitmap& bm, PixelRefSet* prset) : SkDevice(bm) {
+    GatherPixelRefDevice(const SkBitmap& bm, PixelRefSet* prset) : SkBitmapDevice(bm) {
         fPRSet = prset;
     }
 
@@ -138,7 +138,7 @@
                               const SkPaint& paint) SK_OVERRIDE {
         this->addBitmapFromPaint(paint);
     }
-    virtual void drawDevice(const SkDraw&, SkDevice*, int x, int y,
+    virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                             const SkPaint&) SK_OVERRIDE {
         nothing_to_do();
     }
@@ -150,11 +150,14 @@
         not_supported();
         return false;
     }
+
+private:
+    typedef SkBitmapDevice INHERITED;
 };
 
 class NoSaveLayerCanvas : public SkCanvas {
 public:
-    NoSaveLayerCanvas(SkDevice* device) : INHERITED(device) {}
+    NoSaveLayerCanvas(SkBaseDevice* device) : INHERITED(device) {}
 
     // turn saveLayer() into save() for speed, should not affect correctness.
     virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
diff --git a/tests/CanvasTest.cpp b/tests/CanvasTest.cpp
index 26896fc..24c3348 100644
--- a/tests/CanvasTest.cpp
+++ b/tests/CanvasTest.cpp
@@ -779,7 +779,7 @@
 
         SkBitmap deferredStore;
         createBitmap(&deferredStore, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-        SkDevice deferredDevice(deferredStore);
+        SkBitmapDevice deferredDevice(deferredStore);
         SkAutoTUnref<SkDeferredCanvas> deferredCanvas(SkDeferredCanvas::Create(&deferredDevice));
         testStep->setAssertMessageFormat(kDeferredDrawAssertMessageFormat);
         testStep->draw(deferredCanvas, reporter);
@@ -821,7 +821,7 @@
 
     SkBitmap indirectStore;
     createBitmap(&indirectStore, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-    SkDevice indirectDevice(indirectStore);
+    SkBitmapDevice indirectDevice(indirectStore);
     SkCanvas indirectCanvas(&indirectDevice);
     SkProxyCanvas proxyCanvas(&indirectCanvas);
     testStep->setAssertMessageFormat(kProxyDrawAssertMessageFormat);
@@ -844,12 +844,12 @@
 
     SkBitmap indirectStore1;
     createBitmap(&indirectStore1, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-    SkDevice indirectDevice1(indirectStore1);
+    SkBitmapDevice indirectDevice1(indirectStore1);
     SkCanvas indirectCanvas1(&indirectDevice1);
 
     SkBitmap indirectStore2;
     createBitmap(&indirectStore2, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-    SkDevice indirectDevice2(indirectStore2);
+    SkBitmapDevice indirectDevice2(indirectStore2);
     SkCanvas indirectCanvas2(&indirectDevice2);
 
     SkISize canvasSize = referenceCanvas.getDeviceSize();
@@ -882,7 +882,7 @@
                                          CanvasTestStep* testStep) {
     SkBitmap referenceStore;
     createBitmap(&referenceStore, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-    SkDevice referenceDevice(referenceStore);
+    SkBitmapDevice referenceDevice(referenceStore);
     SkCanvas referenceCanvas(&referenceDevice);
     testStep->setAssertMessageFormat(kCanvasDrawAssertMessageFormat);
     testStep->draw(&referenceCanvas, reporter);
diff --git a/tests/DeferredCanvasTest.cpp b/tests/DeferredCanvasTest.cpp
index 15474f5..d7ee761 100644
--- a/tests/DeferredCanvasTest.cpp
+++ b/tests/DeferredCanvasTest.cpp
@@ -33,7 +33,7 @@
     SkBitmap store;
 
     create(&store, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-    SkDevice device(store);
+    SkBitmapDevice device(store);
     SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
 
     canvas->clear(0x00000000);
@@ -259,7 +259,7 @@
     SkBitmap store;
 
     create(&store, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-    SkDevice device(store);
+    SkBitmapDevice device(store);
     SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
 
     canvas->clear(0x00000000);
@@ -279,7 +279,7 @@
     partialRect.setXYWH(SkIntToScalar(0), SkIntToScalar(0),
         SkIntToScalar(1), SkIntToScalar(1));
     create(&store, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF);
-    SkDevice device(store);
+    SkBitmapDevice device(store);
     SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
 
     // verify that frame is intially fresh
@@ -433,9 +433,9 @@
     }
 }
 
-class MockDevice : public SkDevice {
+class MockDevice : public SkBitmapDevice {
 public:
-    MockDevice(const SkBitmap& bm) : SkDevice(bm) {
+    MockDevice(const SkBitmap& bm) : SkBitmapDevice(bm) {
         fDrawBitmapCallCount = 0;
     }
     virtual void drawBitmap(const SkDraw&, const SkBitmap&,
@@ -502,7 +502,7 @@
     SkBitmap store;
     store.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
     store.allocPixels();
-    SkDevice device(store);
+    SkBitmapDevice device(store);
     NotificationCounter notificationCounter;
     SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
     canvas->setNotificationClient(&notificationCounter);
@@ -585,7 +585,7 @@
     SkBitmap store;
     store.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
     store.allocPixels();
-    SkDevice device(store);
+    SkBitmapDevice device(store);
     NotificationCounter notificationCounter;
     SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
     canvas->setNotificationClient(&notificationCounter);
@@ -606,7 +606,7 @@
     SkBitmap store;
     store.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
     store.allocPixels();
-    SkDevice device(store);
+    SkBitmapDevice device(store);
     SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
     // test will fail if nbIterations is not in sync with
     // BITMAPS_TO_KEEP in SkGPipeWrite.cpp
@@ -652,7 +652,7 @@
 
     // 1 under : should not store the image
     {
-        SkDevice device(store);
+        SkBitmapDevice device(store);
         SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
         canvas->setBitmapSizeThreshold(39999);
         canvas->drawBitmap(sourceImage, 0, 0, NULL);
@@ -662,7 +662,7 @@
 
     // exact value : should store the image
     {
-        SkDevice device(store);
+        SkBitmapDevice device(store);
         SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
         canvas->setBitmapSizeThreshold(40000);
         canvas->drawBitmap(sourceImage, 0, 0, NULL);
@@ -672,7 +672,7 @@
 
     // 1 over : should still store the image
     {
-        SkDevice device(store);
+        SkBitmapDevice device(store);
         SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
         canvas->setBitmapSizeThreshold(40001);
         canvas->drawBitmap(sourceImage, 0, 0, NULL);
@@ -807,11 +807,11 @@
     SkBitmap store;
     store.setConfig(SkBitmap::kARGB_8888_Config, 100, 100);
     store.allocPixels();
-    SkDevice device(store);
+    SkBitmapDevice device(store);
     NotificationCounter notificationCounter;
     SkAutoTUnref<SkDeferredCanvas> canvas(SkDeferredCanvas::Create(&device));
     canvas->setNotificationClient(&notificationCounter);
-    SkAutoTUnref<SkDevice> secondaryDevice(canvas->createCompatibleDevice(
+    SkAutoTUnref<SkBaseDevice> secondaryDevice(canvas->createCompatibleDevice(
         SkBitmap::kARGB_8888_Config, 10, 10, device.isOpaque()));
     SkCanvas secondaryCanvas(secondaryDevice.get());
     SkRect rect = SkRect::MakeWH(5, 5);
diff --git a/tests/GradientTest.cpp b/tests/GradientTest.cpp
index cf8fbee..cd66a3e 100644
--- a/tests/GradientTest.cpp
+++ b/tests/GradientTest.cpp
@@ -146,7 +146,7 @@
     outBitmap.allocPixels();
     SkPaint paint;
     paint.setShader(s.get());
-    SkDevice device(outBitmap);
+    SkBitmapDevice device(outBitmap);
     SkCanvas canvas(&device);
     canvas.drawPaint(paint);
     SkAutoLockPixels alp(outBitmap);
diff --git a/tests/LayerDrawLooperTest.cpp b/tests/LayerDrawLooperTest.cpp
index daadc86..2e4642e 100644
--- a/tests/LayerDrawLooperTest.cpp
+++ b/tests/LayerDrawLooperTest.cpp
@@ -19,17 +19,20 @@
 
 namespace {
 
-class FakeDevice : public SkDevice {
+class FakeDevice : public SkBitmapDevice {
 public:
-    FakeDevice() : SkDevice(SkBitmap::kARGB_8888_Config, 100, 100) { }
+    FakeDevice() : SkBitmapDevice(SkBitmap::kARGB_8888_Config, 100, 100, false) { }
 
     virtual void drawRect(const SkDraw& draw, const SkRect& r,
                           const SkPaint& paint) SK_OVERRIDE {
         fLastMatrix = *draw.fMatrix;
-        SkDevice::drawRect(draw, r, paint);
+        INHERITED::drawRect(draw, r, paint);
     }
 
     SkMatrix fLastMatrix;
+
+private:
+    typedef SkBitmapDevice INHERITED;
 };
 
 } // namespace
diff --git a/tests/PremulAlphaRoundTripTest.cpp b/tests/PremulAlphaRoundTripTest.cpp
index 28150d6..79b32f9 100644
--- a/tests/PremulAlphaRoundTripTest.cpp
+++ b/tests/PremulAlphaRoundTripTest.cpp
@@ -41,7 +41,7 @@
 };
 
 void PremulAlphaRoundTripTest(skiatest::Reporter* reporter, GrContextFactory* factory) {
-    SkAutoTUnref<SkDevice> device;
+    SkAutoTUnref<SkBaseDevice> device;
     for (int dtype = 0; dtype < 2; ++dtype) {
 
         int glCtxTypeCnt = 1;
@@ -52,10 +52,10 @@
 #endif
         for (int glCtxType = 0; glCtxType < glCtxTypeCnt; ++glCtxType) {
             if (0 == dtype) {
-                device.reset(new SkDevice(SkBitmap::kARGB_8888_Config,
-                                              256,
-                                              256,
-                                              false));
+                device.reset(new SkBitmapDevice(SkBitmap::kARGB_8888_Config,
+                                                256,
+                                                256,
+                                                false));
             } else {
 #if SK_SUPPORT_GPU
                 GrContextFactory::GLContextType type =
diff --git a/tests/ReadPixelsTest.cpp b/tests/ReadPixelsTest.cpp
index 24f5954..9cc1074 100644
--- a/tests/ReadPixelsTest.cpp
+++ b/tests/ReadPixelsTest.cpp
@@ -311,9 +311,10 @@
         }
 #endif
         for (int glCtxType = 0; glCtxType < glCtxTypeCnt; ++glCtxType) {
-            SkAutoTUnref<SkDevice> device;
+            SkAutoTUnref<SkBaseDevice> device;
             if (0 == dtype) {
-                device.reset(new SkDevice(SkBitmap::kARGB_8888_Config, DEV_W, DEV_H, false));
+                device.reset(new SkBitmapDevice(SkBitmap::kARGB_8888_Config, 
+                                                DEV_W, DEV_H, false));
             } else {
 #if SK_SUPPORT_GPU
                 GrContextFactory::GLContextType type =
diff --git a/tests/ReadWriteAlphaTest.cpp b/tests/ReadWriteAlphaTest.cpp
index 7830669..8ae936e 100644
--- a/tests/ReadWriteAlphaTest.cpp
+++ b/tests/ReadWriteAlphaTest.cpp
@@ -82,7 +82,7 @@
         REPORTER_ASSERT(reporter, match);
 
         // Now try writing on the single channel texture
-        SkAutoTUnref<SkDevice> device(new SkGpuDevice(context, texture->asRenderTarget()));
+        SkAutoTUnref<SkBaseDevice> device(new SkGpuDevice(context, texture->asRenderTarget()));
         SkCanvas canvas(device);
 
         SkPaint paint;
diff --git a/tests/TileGridTest.cpp b/tests/TileGridTest.cpp
index f4a0af8..f643652 100644
--- a/tests/TileGridTest.cpp
+++ b/tests/TileGridTest.cpp
@@ -24,7 +24,7 @@
 namespace {
 class MockCanvas : public SkCanvas {
 public:
-    MockCanvas(SkDevice* device) : SkCanvas(device)
+    MockCanvas(SkBaseDevice* device) : SkCanvas(device)
     {}
 
     virtual void drawRect(const SkRect& rect, const SkPaint&)
@@ -80,14 +80,14 @@
 
         // Test parts of top-left tile
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             picture.draw(&mockCanvas);
             REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
             REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
         }
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-7.99f), SkFloatToScalar(-7.99f));
             picture.draw(&mockCanvas);
@@ -96,7 +96,7 @@
         }
         // Corner overlap
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-9.5f), SkFloatToScalar(-9.5f));
             picture.draw(&mockCanvas);
@@ -106,7 +106,7 @@
         }
         // Intersect bottom right tile, but does not overlap rect 2
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-16.0f), SkFloatToScalar(-16.0f));
             picture.draw(&mockCanvas);
@@ -115,7 +115,7 @@
         }
         // Out of bounds queries, snap to border tiles
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(2.0f), SkFloatToScalar(0.0f));
             picture.draw(&mockCanvas);
@@ -123,7 +123,7 @@
             REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
         }
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(0.0f), SkFloatToScalar(2.0f));
             picture.draw(&mockCanvas);
@@ -131,7 +131,7 @@
             REPORTER_ASSERT(reporter, rect1 == mockCanvas.fRects[0]);
         }
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-22.0f), SkFloatToScalar(-16.0f));
             picture.draw(&mockCanvas);
@@ -139,7 +139,7 @@
             REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
         }
         {
-            SkDevice device(store);
+            SkBitmapDevice device(store);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-16.0f), SkFloatToScalar(-22.0f));
             picture.draw(&mockCanvas);
@@ -185,7 +185,7 @@
         {
             // The offset should cancel the top and left borders of the top left tile
             // So a look-up at interval 0-10 should be grid aligned,
-            SkDevice device(tileBitmap);
+            SkBitmapDevice device(tileBitmap);
             MockCanvas mockCanvas(&device);
             picture.draw(&mockCanvas);
             REPORTER_ASSERT(reporter, 1 == mockCanvas.fRects.count());
@@ -193,7 +193,7 @@
         }
         {
             // Encroaching border by one pixel
-            SkDevice device(moreThanATileBitmap);
+            SkBitmapDevice device(moreThanATileBitmap);
             MockCanvas mockCanvas(&device);
             picture.draw(&mockCanvas);
             REPORTER_ASSERT(reporter, 2 == mockCanvas.fRects.count());
@@ -204,7 +204,7 @@
             // Tile stride is 8 (tileWidth - 2 * border pixels
             // so translating by 8, should make query grid-aligned
             // with middle tile.
-            SkDevice device(tileBitmap);
+            SkBitmapDevice device(tileBitmap);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkIntToScalar(-8), SkIntToScalar(-8));
             picture.draw(&mockCanvas);
@@ -212,7 +212,7 @@
             REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[0]);
         }
         {
-            SkDevice device(tileBitmap);
+            SkBitmapDevice device(tileBitmap);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-7.9f), SkFloatToScalar(-7.9f));
             picture.draw(&mockCanvas);
@@ -221,7 +221,7 @@
             REPORTER_ASSERT(reporter, rect2 == mockCanvas.fRects[1]);
         }
         {
-            SkDevice device(tileBitmap);
+            SkBitmapDevice device(tileBitmap);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-8.1f), SkFloatToScalar(-8.1f));
             picture.draw(&mockCanvas);
@@ -233,7 +233,7 @@
             // Regression test for crbug.com/234688
             // Once the 2x2 device region is inset by margin, it yields an empty
             // adjusted region, sitting right on top of the tile boundary.
-            SkDevice device(tinyBitmap);
+            SkBitmapDevice device(tinyBitmap);
             MockCanvas mockCanvas(&device);
             mockCanvas.translate(SkFloatToScalar(-8.0f), SkFloatToScalar(-8.0f));
             picture.draw(&mockCanvas);
diff --git a/tests/WritePixelsTest.cpp b/tests/WritePixelsTest.cpp
index 202bfd6..3db3a2a 100644
--- a/tests/WritePixelsTest.cpp
+++ b/tests/WritePixelsTest.cpp
@@ -227,7 +227,7 @@
                 const SkBitmap& bitmap,
                 int writeX, int writeY,
                 SkCanvas::Config8888 config8888) {
-    SkDevice* dev = canvas->getDevice();
+    SkBaseDevice* dev = canvas->getDevice();
     if (!dev) {
         return false;
     }
@@ -305,7 +305,7 @@
 #endif
 };
 
-SkDevice* createDevice(const CanvasConfig& c, GrContext* grCtx) {
+SkBaseDevice* createDevice(const CanvasConfig& c, GrContext* grCtx) {
     switch (c.fDevType) {
         case kRaster_DevType: {
             SkBitmap bmp;
@@ -320,7 +320,7 @@
                 SkAutoLockPixels alp(bmp);
                 memset(bmp.getPixels(), DEV_PAD, bmp.getSafeSize());
             }
-            return new SkDevice(bmp);
+            return new SkBitmapDevice(bmp);
         }
 #if SK_SUPPORT_GPU
         case kGpu_BottomLeft_DevType:
@@ -435,7 +435,7 @@
             }
 #endif
 
-            SkAutoTUnref<SkDevice> device(createDevice(gCanvasConfigs[i], context));
+            SkAutoTUnref<SkBaseDevice> device(createDevice(gCanvasConfigs[i], context));
             SkCanvas canvas(device);
 
             static const SkCanvas::Config8888 gSrcConfigs[] = {