Switch the android overscroll glow to use UIResources.

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"
+#include "cc/layers/contents_scaling_layer.h"
 #include "cc/resources/ui_resource_client.h"
 #include "ui/gfx/rect.h"
 
 namespace cc {
 
 class LayerTreeHost;
 class ScopedUIResource;
 
-class CC_EXPORT UIResourceLayer : public Layer {
+class CC_EXPORT UIResourceLayer : public ContentsScalingLayer {
  public:
   static scoped_refptr<UIResourceLayer> Create();
 
   virtual bool DrawsContent() const OVERRIDE;
 
   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
 
   virtual void SetLayerTreeHost(LayerTreeHost* host) OVERRIDE;
 
   void SetBitmap(const SkBitmap& skbitmap);
 
   // An alternative way of setting the resource to allow for sharing.
   void SetUIResourceId(UIResourceId resource_id);
 
   // Sets a UV transform to be used at draw time. Defaults to (0, 0) and (1, 1).
   void SetUV(gfx::PointF top_left, gfx::PointF bottom_right);
 
   // Sets an opacity value per vertex. It will be multiplied by the layer
   // opacity value.
   void SetVertexOpacity(float bottom_left,
                         float top_left,
                         float top_right,
                         float bottom_right);
 
+  virtual void CalculateContentsScale(float ideal_contents_scale,
+                                      float device_scale_factor,
+                                      float page_scale_factor,
+                                      bool animating_transform_to_screen,
+                                      float* contents_scale_x,
+                                      float* contents_scale_y,
+                                      gfx::Size* content_bounds) OVERRIDE;
+
   class UIResourceHolder {
    public:
     virtual UIResourceId id() = 0;
     virtual ~UIResourceHolder();
   };
 
  protected:
   UIResourceLayer();
   virtual ~UIResourceLayer();
 
   scoped_ptr<UIResourceHolder> ui_resource_holder_;
   SkBitmap bitmap_;
 
   gfx::PointF uv_top_left_;
   gfx::PointF uv_bottom_right_;
   float vertex_opacity_[4];
 
  private:
   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
       OVERRIDE;
   void RecreateUIResourceHolder();
 
-
-
   DISALLOW_COPY_AND_ASSIGN(UIResourceLayer);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_UI_RESOURCE_LAYER_H_