cc: Heapify pointers instead of objects in eviction tile priority queue.

cc/resources/raster_tile_priority_queue.h

 // Copyright 2014 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_RASTER_TILE_PRIORITY_QUEUE_H_
 #define CC_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 32 matching lines @@
   void Reset();
 
   bool IsEmpty() const;
   Tile* Top();
   void Pop();
 
  private:
   // TODO(vmpstr): This is potentially unnecessary if it becomes the case that
   // PairedPictureLayerQueue is fast enough to copy. In that case, we can use
   // objects directly (ie std::vector<PairedPictureLayerQueue>.
-  ScopedPtrVector<PairedPictureLayerQueue> paired_queues_heap_;
+  ScopedPtrVector<PairedPictureLayerQueue> paired_queues_;
   TreePriority tree_priority_;
 
   DISALLOW_COPY_AND_ASSIGN(RasterTilePriorityQueue);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_RASTER_TILE_PRIORITY_QUEUE_H_