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/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();