cc: Remove tile ref counting in tile manager.

cc/test/fake_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_TEST_FAKE_TILE_MANAGER_H_
 #define  CC_TEST_FAKE_TILE_MANAGER_H_
 
+#include <vector>
+
 #include "cc/resources/tile_manager.h"
 
 namespace cc {
 
 class FakeTileManager : public TileManager {
  public:
   explicit FakeTileManager(TileManagerClient* client);
   FakeTileManager(TileManagerClient* client,
                   ResourceProvider* resource_provider);
 
   virtual void ScheduleTasks() OVERRIDE {}
 
   void ReassignMemoryToOOMTilesRequiredForActivation();
   bool HasBeenAssignedMemory(Tile* tile);
+  void AssignMemoryToTiles();
 
   virtual ~FakeTileManager() { }
+
+  std::vector<Tile*> tiles_for_raster;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_TILE_MANAGER_H_