Switch the android overscroll glow to use UIResources.

cc/layers/ui_resource_layer.h

Index: cc/layers/ui_resource_layer.h
diff --git a/cc/layers/ui_resource_layer.h b/cc/layers/ui_resource_layer.h
index 69721a30faadf69435214fa85f5d7c173e06952b..b91b7e357624176167660fcd2a9128617b9f6b21 100644
--- a/cc/layers/ui_resource_layer.h
+++ b/cc/layers/ui_resource_layer.h
@@ -7,7 +7,7 @@
 
 #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"
 
@@ -16,7 +16,7 @@ namespace cc {
 class LayerTreeHost;
 class ScopedUIResource;
 
-class CC_EXPORT UIResourceLayer : public Layer {
+class CC_EXPORT UIResourceLayer : public ContentsScalingLayer {
  public:
   static scoped_refptr<UIResourceLayer> Create();
 
@@ -41,6 +41,14 @@ class CC_EXPORT UIResourceLayer : public Layer {
                         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;
@@ -63,8 +71,6 @@ class CC_EXPORT UIResourceLayer : public Layer {
       OVERRIDE;
   void RecreateUIResourceHolder();
 
-
-
   DISALLOW_COPY_AND_ASSIGN(UIResourceLayer);
 };