De-virtualize SkCanvas save/restore.

include/utils/SkDeferredCanvas.h

Index: include/utils/SkDeferredCanvas.h
diff --git a/include/utils/SkDeferredCanvas.h b/include/utils/SkDeferredCanvas.h
index e82cad3ab1fe294910ae814135bb90fddb5e9f65..7d8b58cc8709d3b8e6b9412090264b392110df34 100644
--- a/include/utils/SkDeferredCanvas.h
+++ b/include/utils/SkDeferredCanvas.h
@@ -138,10 +138,6 @@ public:
     void silentFlush();
 
     // Overrides of the SkCanvas interface
-    virtual int save(SaveFlags flags) SK_OVERRIDE;
-    virtual int saveLayer(const SkRect* bounds, const SkPaint* paint,
-                          SaveFlags flags) SK_OVERRIDE;
-    virtual void restore() SK_OVERRIDE;
     virtual bool isDrawingToLayer() const SK_OVERRIDE;
     virtual bool translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
     virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
@@ -193,6 +189,10 @@ public:
     virtual SkDrawFilter* setDrawFilter(SkDrawFilter* filter) SK_OVERRIDE;
 
 protected:
+    virtual void willSave(SaveFlags) SK_OVERRIDE;
+    virtual SaveLayerStrategy willSaveLayer(const SkRect*, const SkPaint*, SaveFlags) SK_OVERRIDE;
+    virtual void willRestore() SK_OVERRIDE;
+
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&,
                               const SkPaint&) SK_OVERRIDE;