Prevent recreation of UI resource holder when created with resource ID

cc/layers/ui_resource_layer.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_LAYERS_UI_RESOURCE_LAYER_H_
 #define CC_LAYERS_UI_RESOURCE_LAYER_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer.h"
@@ skipping 25 matching lines @@
   // opacity value.
   void SetVertexOpacity(float bottom_left,
                         float top_left,
                         float top_right,
                         float bottom_right);
 
   class UIResourceHolder {
    public:
     virtual UIResourceId id() = 0;
     virtual ~UIResourceHolder();
+    virtual bool NeedsRecreation();
   };
 
  protected:
   UIResourceLayer();
   ~UIResourceLayer() override;
 
   bool HasDrawableContent() const override;
 
   scoped_ptr<UIResourceHolder> ui_resource_holder_;
   SkBitmap bitmap_;
 
   gfx::PointF uv_top_left_;
   gfx::PointF uv_bottom_right_;
   float vertex_opacity_[4];
 
  private:
   scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override;
   void RecreateUIResourceHolder();
 
 
 
   DISALLOW_COPY_AND_ASSIGN(UIResourceLayer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_UI_RESOURCE_LAYER_H_