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 e747d7b7ed8aec95e3b546b764583bd9e622fc24..7ea6cc9b62d7d77d1b753a81265f95044308a93a 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -50,8 +50,8 @@ class RenderPassDrawQuad;
 class TextureMailboxDeleter;
 class TopControlsManager;
 class UIResourceBitmap;
+class UIResourceRequest;
 struct RendererCapabilities;
-struct UIResourceRequest;
 
 // LayerTreeHost->Proxy callback interface.
 class LayerTreeHostImplClient {
@@ -400,14 +400,15 @@ 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 EvictAllUIResources();
   bool EvictedUIResourcesExist() const;
 
-  ResourceProvider::ResourceId ResourceIdForUIResource(UIResourceId uid) const;
+  virtual ResourceProvider::ResourceId ResourceIdForUIResource(
+      UIResourceId uid) const;
 
   void DidInitializeVisibleTileForTesting() { DidInitializeVisibleTile(); }