Update the nine patch layer to use UI resources

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 3f0975f3755ae27b04e3ebc67191b43ff423c30b..113cd0fa1399f16c091ac113fcd04a5573a70d71 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -48,8 +48,8 @@ class RenderingStatsInstrumentation;
 class RenderPassDrawQuad;
 class TopControlsManager;
 class UIResourceBitmap;
+class UIResourceRequest;
 struct RendererCapabilities;
-struct UIResourceRequest;
 
 // LayerTreeHost->Proxy callback interface.
 class LayerTreeHostImplClient {
@@ -405,13 +405,14 @@ class CC_EXPORT LayerTreeHostImpl
 
   bool page_scale_animation_active() const { return !!page_scale_animation_; }
 
-  void CreateUIResource(UIResourceId uid,
-                        scoped_refptr<UIResourceBitmap> bitmap);
+  virtual void CreateUIResource(UIResourceId uid,
+                                const UIResourceBitmap& bitmap);
   // Deletes a UI resource.  May safely be called more than once.
-  void DeleteUIResource(UIResourceId uid);
+  virtual void DeleteUIResource(UIResourceId uid);
   void DeleteAllUIResources();
 
-  ResourceProvider::ResourceId ResourceIdForUIResource(UIResourceId uid) const;
+  virtual ResourceProvider::ResourceId ResourceIdForUIResource(
+      UIResourceId uid) const;
 
   void DidInitializeVisibleTileForTesting() { DidInitializeVisibleTile(); }