Switch the android overscroll glow to use UIResources.

content/public/browser/android/compositor.h

Index: content/public/browser/android/compositor.h
diff --git a/content/public/browser/android/compositor.h b/content/public/browser/android/compositor.h
index eb0c96e6413539116aad6f9d0dd159e0e2ca2a94..8783f64f205f560ab15974e53d43d4a59d960e24 100644
--- a/content/public/browser/android/compositor.h
+++ b/content/public/browser/android/compositor.h
@@ -76,6 +76,9 @@ class CONTENT_EXPORT Compositor {
   // Deletes a UIResource.
   virtual void DeleteUIResource(cc::UIResourceId resource_id) = 0;
 
+  // Returns the size of a UIResource.
+  virtual gfx::Size GetUIResourceSize(cc::UIResourceId id) const = 0;
+
   // Generates an OpenGL texture and returns a texture handle.  May return 0
   // if the current context is lost.
   virtual blink::WebGLId GenerateTexture(gfx::JavaBitmap& bitmap) = 0;
@@ -101,6 +104,10 @@ class CONTENT_EXPORT Compositor {
   virtual bool CopyTextureToBitmap(blink::WebGLId texture_id,
                                    const gfx::Rect& src_rect,
                                    gfx::JavaBitmap& bitmap) = 0;
+
+  virtual cc::UIResourceId GetOverscrollEdgeId() const = 0;
+  virtual cc::UIResourceId GetOverscrollGlowId() const = 0;
+
  protected:
   Compositor() {}
 };