[cc] Evict UIResources when the renderer is not visible

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 268 matching lines @@
 
   // CreateUIResource creates a resource given a bitmap.  The bitmap is
   // generated via an interface function, which is called when initializing the
   // resource and when the resource has been lost (due to lost context).  The
   // 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();
 
   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:
@@ skipping 17 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);
 
-  void RecreateUIResources(bool resource_lost);
-
   typedef base::hash_map<UIResourceId, UIResourceClient*> 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_;
@@ skipping 79 matching lines @@
   };
   LCDTextMetrics lcd_text_metrics_;
   int tree_id_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_