cc: Prevent ResourceUpdateContoller from uploading textures after lost context

cc/resources/resource_update_controller.h

 // Copyright 2012 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_RESOURCES_RESOURCE_UPDATE_CONTROLLER_H_
 #define CC_RESOURCES_RESOURCE_UPDATE_CONTROLLER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 30 matching lines @@
   virtual ~ResourceUpdateController();
 
   // Discard uploads to textures that were evicted on the impl thread.
   void DiscardUploadsToEvictedResources();
 
   void PerformMoreUpdates(base::TimeTicks time_limit);
   void Finalize();
 
 
   // Virtual for testing.
-  virtual base::TimeTicks Now() const;
-  virtual base::TimeDelta UpdateMoreTexturesTime() const;
   virtual size_t UpdateMoreTexturesSize() const;
+  virtual base::TimeTicks UpdateMoreTexturesCompletionTime();
 
  protected:
   ResourceUpdateController(ResourceUpdateControllerClient* client,
                            base::SingleThreadTaskRunner* task_runner,
                            scoped_ptr<ResourceUpdateQueue> queue,
                            ResourceProvider* resource_provider);
 
  private:
   static size_t MaxFullUpdatesPerTick(ResourceProvider* resource_provider);
 
   size_t MaxBlockingUpdates() const;
-  base::TimeDelta PendingUpdateTime() const;
 
   void UpdateTexture(ResourceUpdate update);
 
   // This returns true when there were textures left to update.
   bool UpdateMoreTexturesIfEnoughTimeRemaining();
   void UpdateMoreTexturesNow();
   void OnTimerFired();
 
   ResourceUpdateControllerClient* client_;
   scoped_ptr<ResourceUpdateQueue> queue_;
   bool contents_textures_purged_;
   ResourceProvider* resource_provider_;
   base::TimeTicks time_limit_;
   size_t texture_updates_per_tick_;
   bool first_update_attempt_;
   base::SingleThreadTaskRunner* task_runner_;
   bool task_posted_;
   base::WeakPtrFactory<ResourceUpdateController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceUpdateController);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RESOURCE_UPDATE_CONTROLLER_H_