Automated IWYU fix for TaskRunner includes.

cc/tiles/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_TILES_TILE_MANAGER_H_
 #define CC_TILES_TILE_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 #include <unordered_map>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
+#include "base/sequenced_task_runner.h"
 #include "base/values.h"
 #include "cc/base/unique_notifier.h"
 #include "cc/raster/raster_buffer_provider.h"
 #include "cc/raster/raster_source.h"
 #include "cc/resources/memory_history.h"
 #include "cc/resources/resource_pool.h"
 #include "cc/tiles/checker_image_tracker.h"
 #include "cc/tiles/decoded_image_tracker.h"
 #include "cc/tiles/eviction_tile_priority_queue.h"
 #include "cc/tiles/image_controller.h"
@@ skipping 376 matching lines @@
   base::WeakPtrFactory<TileManager> task_set_finished_weak_ptr_factory_;
   // The |ready_to_draw_callback_weak_ptr_factory_| is never invalidated.
   base::WeakPtrFactory<TileManager> ready_to_draw_callback_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_TILE_MANAGER_H_