Split SkDevice into SkBaseDevice and SkBitmapDevice

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



git-svn-id: http://skia.googlecode.com/svn/trunk@10995 2bbb7eff-a529-9590-31e7-b0007b416f81
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_ */