De-virtualize SkCanvas save/restore.

src/utils/SkLuaCanvas.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkLuaCanvas.h"
 #include "SkLua.h"
 
@@ skipping 63 matching lines @@
 ///////////////////////////////////////////////////////////////////////////////
 
 SkLuaCanvas::SkLuaCanvas(int width, int height, lua_State* L, const char func[])
     : INHERITED(width, height)
     , fL(L)
     , fFunc(func) {
 }
 
 SkLuaCanvas::~SkLuaCanvas() {}
 
-int SkLuaCanvas::save(SaveFlags flags) {
+void SkLuaCanvas::willSave(SaveFlags flags) {
     AUTO_LUA("save");
-    return this->INHERITED::save(flags);
+    this->INHERITED::willSave(flags);
 }
 
-int SkLuaCanvas::saveLayer(const SkRect* bounds, const SkPaint* paint,
-                             SaveFlags flags) {
+SkCanvas::SaveLayerStrategy SkLuaCanvas::willSaveLayer(const SkRect* bounds, const SkPaint* paint,
+                                                       SaveFlags flags) {
     AUTO_LUA("saveLayer");
     if (bounds) {
         lua.pushRect(*bounds, "bounds");
     }
     if (paint) {
         lua.pushPaint(*paint, "paint");
     }
-    return this->INHERITED::save(flags);
+
+    this->INHERITED::willSaveLayer(bounds, paint, flags);
+    // No need for a layer.
+    return kNoLayer_SaveLayerStrategy;
 }
 
-void SkLuaCanvas::restore() {
+void SkLuaCanvas::willRestore() {
     AUTO_LUA("restore");
-    this->INHERITED::restore();
+    this->INHERITED::willRestore();
 }
 
 bool SkLuaCanvas::translate(SkScalar dx, SkScalar dy) {
     AUTO_LUA("translate");
     lua.pushScalar(dx, "dx");
     lua.pushScalar(dy, "dy");
     return this->INHERITED::translate(dx, dy);
 }
 
 bool SkLuaCanvas::scale(SkScalar sx, SkScalar sy) {
@@ skipping 169 matching lines @@
                                  const SkColor colors[], SkXfermode* xmode,
                                  const uint16_t indices[], int indexCount,
                                  const SkPaint& paint) {
     AUTO_LUA("drawVertices");
     lua.pushPaint(paint, "paint");
 }
 
 void SkLuaCanvas::drawData(const void* data, size_t length) {
     AUTO_LUA("drawData");
 }