De-virtualize SkCanvas save/restore.

include/utils/SkLuaCanvas.h

Index: include/utils/SkLuaCanvas.h
diff --git a/include/utils/SkLuaCanvas.h b/include/utils/SkLuaCanvas.h
index a4f30bc349f0b6a61a8ed4ce839cccecdbd47232..9bc109ee1498a7caa1afd48037602e6bdbf31578 100644
--- a/include/utils/SkLuaCanvas.h
+++ b/include/utils/SkLuaCanvas.h
@@ -20,11 +20,6 @@ public:
     SkLuaCanvas(int width, int height, lua_State*, const char function[]);
     virtual ~SkLuaCanvas();
 
-    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 translate(SkScalar dx, SkScalar dy) SK_OVERRIDE;
     virtual bool scale(SkScalar sx, SkScalar sy) SK_OVERRIDE;
     virtual bool rotate(SkScalar degrees) SK_OVERRIDE;
@@ -67,6 +62,10 @@ public:
     virtual void drawData(const void* data, size_t length) 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;
 
     virtual void onClipRect(const SkRect&, SkRegion::Op, ClipEdgeStyle) SK_OVERRIDE;