cc: Split RasterTilePriorityQueue into required and all based on type.

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 42 matching lines @@
   // Called when the visible representation of a tile might have changed. Some
   // examples are:
   // - Tile version initialized.
   // - Tile resources freed.
   // - Tile marked for on-demand raster.
   virtual void NotifyTileStateChanged(const Tile* tile) = 0;
 
   // Given an empty raster tile priority queue, this will build a priority queue
   // that will return tiles in order in which they should be rasterized.
   // Note if the queue was previous built, Reset must be called on it.
-  virtual void BuildRasterQueue(RasterTilePriorityQueue* queue,
-                                TreePriority tree_priority,
-                                RasterTilePriorityQueue::Type type) = 0;
+  virtual scoped_ptr<RasterTilePriorityQueue> BuildRasterQueue(
+      TreePriority tree_priority,
+      RasterTilePriorityQueue::Type type) = 0;
 
   // Given an empty eviction tile priority queue, this will build a priority
   // queue that will return tiles in order in which they should be evicted.
   // Note if the queue was previous built, Reset must be called on it.
+  // TODO(vmpstr): Change this to scoped_ptr<EvictionQueue> Build...
   virtual void BuildEvictionQueue(EvictionTilePriorityQueue* queue,
                                   TreePriority tree_priority) = 0;
 
  protected:
   virtual ~TileManagerClient() {}
 };
 
 struct RasterTaskCompletionStats {
   RasterTaskCompletionStats();
 
@@ skipping 230 matching lines @@
 
   bool did_notify_ready_to_activate_;
   bool did_notify_ready_to_draw_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_MANAGER_H_