cc: Do not cleanup tiles with raster tasks.

cc/resources/tile_manager.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_TILE_MANAGER_H_
 #define CC_RESOURCES_TILE_MANAGER_H_
 
 #include <deque>
 #include <queue>
 #include <set>
@@ skipping 209 matching lines @@
     // Soft limit is used for resource pool such that
     // memory returns to soft limit after going over.
     if (state != global_state_) {
       global_state_ = state;
       prioritized_tiles_dirty_ = true;
     }
   }
 
   void SetRasterizerForTesting(Rasterizer* rasterizer);
 
-  void CleanUpReleasedTilesForTesting() { CleanUpReleasedTiles(); }
+  void FreeResourcesAndCleanUpReleasedTilesForTesting() {
+    FreeResourcesForReleasedTiles();
+    CleanUpReleasedTiles();
+  }
 
  protected:
   TileManager(TileManagerClient* client,
               base::SequencedTaskRunner* task_runner,
               ResourcePool* resource_pool,
               Rasterizer* rasterizer,
               RenderingStatsInstrumentation* rendering_stats_instrumentation);
 
   // Methods called by Tile
   friend class Tile;
   void DidChangeTilePriority(Tile* tile);
 
+  bool TileHasRasterTask(Tile* tile);

[reveman, 2014/07/11 17:06:36]

does this have to be a member function? please move it to anonymous namespace in
.cc file if possible.

[sohanjg, 2014/07/12 11:41:59]

Looks like, managed_state and raster_task_ used in this func are pvt members and
cant be accessed from anonymous namespace.

[reveman, 2014/07/14 21:55:00]

Ok, just make it static and private then unless there's a good reason it's
non-static and protected.

[sohanjg, 2014/07/15 05:36:37]

Done.

+
+  void FreeResourcesForReleasedTiles();
   void CleanUpReleasedTiles();
 
   // Overriden from RefCountedManager<Tile>:
   virtual void Release(Tile* tile) OVERRIDE;
 
   // Overriden from RasterizerClient:
   virtual bool ShouldForceTasksRequiredForActivationToComplete() const OVERRIDE;
   virtual void DidFinishRunningTasks() OVERRIDE;
   virtual void DidFinishRunningTasksRequiredForActivation() OVERRIDE;
 
@@ skipping 71 matching lines @@
 
   RasterTaskCompletionStats update_visible_tiles_stats_;
 
   std::vector<Tile*> released_tiles_;
 
   ResourceFormat resource_format_;
 
   // Queue used when scheduling raster tasks.
   RasterTaskQueue raster_queue_;
 
-  std::vector<scoped_refptr<RasterTask> > orphan_raster_tasks_;
-
   UniqueNotifier ready_to_activate_check_notifier_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_MANAGER_H_