not for commit/review (thread cost tracker)

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 <set>
 #include <vector>
 
+#include "cc/debug/worker_thread_cost_tracker.h"
 #include "cc/resources/tile_manager.h"
 
 namespace cc {
 
 class FakeTileManager : public TileManager {
  public:
   explicit FakeTileManager(TileManagerClient* client);
   FakeTileManager(TileManagerClient* client, ResourcePool* resource_pool);
   ~FakeTileManager() override;
 
   bool HasBeenAssignedMemory(Tile* tile);
   void AssignMemoryToTiles(
       const GlobalStateThatImpactsTilePriority& state);
 
   void Release(Tile* tile) override;
 
   std::vector<Tile*> tiles_for_raster;
+
+ private:
+  WorkerThreadCostTracker worker_thread_cost_tracker_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_TILE_MANAGER_H_