Split SkDevice out of SkBitmapDevice

https://codereview.chromium.org/22978012/



git-svn-id: http://skia.googlecode.com/svn/trunk@10830 2bbb7eff-a529-9590-31e7-b0007b416f81
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) {