Update the nine patch layer to use UI resources

cc/trees/layer_tree_host.h

Index: cc/trees/layer_tree_host.h
diff --git a/cc/trees/layer_tree_host.h b/cc/trees/layer_tree_host.h
index be0ab06c868f6ac6fd5c95f822d4f8ad5689bea1..29ed0215347b90d22be92af43d0b62e38eb7dabe 100644
--- a/cc/trees/layer_tree_host.h
+++ b/cc/trees/layer_tree_host.h
@@ -95,7 +95,7 @@ struct CC_EXPORT UIResourceRequest {
   ~UIResourceRequest();
   UIResourceRequestType type;
   UIResourceId id;
-  scoped_refptr<UIResourceBitmap> bitmap;
+  UIResourceBitmap bitmap;
 };
 
 class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
@@ -283,6 +283,8 @@ class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
   // Deletes a UI resource.  May safely be called more than once.
   virtual void DeleteUIResource(UIResourceId id);
 
+  virtual gfx::Size GetUIResourceSize(UIResourceId id) const;
+
   bool UsingSharedMemoryResources();
   int id() const { return tree_id_; }
 
@@ -323,7 +325,13 @@ class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
 
   void DidLoseUIResources();
 
-  typedef base::hash_map<UIResourceId, UIResourceClient*> UIResourceClientMap;
+  struct UIResourceClientData {
+    UIResourceClient* client;
+    gfx::Size size;
+  };
+
+  typedef base::hash_map<UIResourceId, UIResourceClientData>
+      UIResourceClientMap;
   UIResourceClientMap ui_resource_client_map_;
   int next_ui_resource_id_;