Update the nine patch layer to use UI resources

cc/trees/layer_tree_host.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <limits>
 #include <list>
 #include <vector>
@@ skipping 69 matching lines @@
   bool using_egl_image;
   bool allow_partial_texture_updates;
   bool using_offscreen_context3d;
   int max_texture_size;
   bool avoid_pow2_textures;
   bool using_map_image;
   bool using_shared_memory_resources;
   bool using_discard_framebuffer;
 };
 
-struct CC_EXPORT UIResourceRequest {
+class CC_EXPORT UIResourceRequest {
+ public:
   enum UIResourceRequestType {
     UIResourceCreate,
     UIResourceDelete,
     UIResourceInvalidRequest
   };
 
-  UIResourceRequest();
+  UIResourceRequest(UIResourceRequestType type, UIResourceId id);
+  UIResourceRequest(UIResourceRequestType type,
+                    UIResourceId id,
+                    const UIResourceBitmap& bitmap);
+  UIResourceRequest(const UIResourceRequest& request);
+
   ~UIResourceRequest();
-  UIResourceRequestType type;
-  UIResourceId id;
-  scoped_refptr<UIResourceBitmap> bitmap;
+
+  UIResourceRequestType GetType() const { return type_; }
+  UIResourceId GetId() const { return id_; }
+  UIResourceBitmap GetBitmap() const {
+    DCHECK(bitmap_);
+    return *bitmap_.get();
+  }
+
+  UIResourceRequest& operator=(const UIResourceRequest& request);
+
+ private:
+  UIResourceRequestType type_;
+  UIResourceId id_;
+  scoped_ptr<UIResourceBitmap> bitmap_;
 };
 
 class CC_EXPORT LayerTreeHost : NON_EXPORTED_BASE(public RateLimiterClient) {
  public:
   static scoped_ptr<LayerTreeHost> Create(
       LayerTreeHostClient* client,
       const LayerTreeSettings& settings,
       scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
   virtual ~LayerTreeHost();
 
@@ skipping 176 matching lines @@
   // parameter of the interface is a single boolean, which indicates whether the
   // resource has been lost or not.  CreateUIResource returns an Id of the
   // resource, which is always positive.
   virtual UIResourceId CreateUIResource(UIResourceClient* client);
   // Deletes a UI resource.  May safely be called more than once.
   virtual void DeleteUIResource(UIResourceId id);
   // Put the recreation of all UI resources into the resource queue after they
   // were evicted on the impl thread.
   void RecreateUIResources();
 
+  virtual gfx::Size GetUIResourceSize(UIResourceId id) const;
+
   bool UsingSharedMemoryResources();
   int id() const { return tree_id_; }
 
  protected:
   LayerTreeHost(LayerTreeHostClient* client, const LayerTreeSettings& settings);
   bool Initialize(scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner);
   bool InitializeForTesting(scoped_ptr<Proxy> proxy_for_testing);
 
  private:
   bool InitializeProxy(scoped_ptr<Proxy> proxy);
@@ skipping 16 matching lines @@
   void PrioritizeTextures(
       const RenderSurfaceLayerList& render_surface_layer_list,
       OverdrawMetrics* metrics);
   void SetPrioritiesForSurfaces(size_t surface_memory_bytes);
   void SetPrioritiesForLayers(const RenderSurfaceLayerList& update_list);
   size_t CalculateMemoryForRenderSurfaces(
       const RenderSurfaceLayerList& update_list);
 
   bool AnimateLayersRecursive(Layer* current, base::TimeTicks time);
 
-  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_;
 
   typedef std::list<UIResourceRequest> UIResourceRequestQueue;
   UIResourceRequestQueue ui_resource_request_queue_;
 
   void CalculateLCDTextMetricsCallback(Layer* layer);
 
   bool animating_;
   bool needs_full_tree_sync_;
@@ skipping 82 matching lines @@
   scoped_refptr<Layer> page_scale_layer_;
   scoped_refptr<Layer> inner_viewport_scroll_layer_;
   scoped_refptr<Layer> outer_viewport_scroll_layer_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_