support direct writing to top layer

include/utils/SkDeferredCanvas.h

Index: include/utils/SkDeferredCanvas.h
diff --git a/include/utils/SkDeferredCanvas.h b/include/utils/SkDeferredCanvas.h
index 210b7fb1894c70a17de77efee1af1ed49ea5fec3..4e56129bb6fe8ff90f727f5bd3692ec3aa923eaf 100644
--- a/include/utils/SkDeferredCanvas.h
+++ b/include/utils/SkDeferredCanvas.h
@@ -11,7 +11,7 @@
 #include "SkCanvas.h"
 #include "SkPixelRef.h"
 
-class DeferredDevice;
+class SkDeferredDevice;
 class SkImage;
 class SkSurface;
 
@@ -236,10 +236,10 @@ public:
 
 protected:
     virtual SkCanvas* canvasForDrawIter();
-    DeferredDevice* getDeferredDevice() const;
+    SkDeferredDevice* getDeferredDevice() const;
 
 private:
-    SkDeferredCanvas(DeferredDevice*);
+    SkDeferredCanvas(SkDeferredDevice*);
 
     void recordedDrawCommand();
     SkCanvas* drawingCanvas() const;