Update from https://crrev.com/304418

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 90 matching lines @@
       TileManagerClient* client,
       base::SequencedTaskRunner* task_runner,
       ResourcePool* resource_pool,
       Rasterizer* rasterizer,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
       size_t scheduled_raster_task_limit);
   ~TileManager() override;
 
   void ManageTiles(const GlobalStateThatImpactsTilePriority& state);
 
-  // Returns true when visible tiles have been initialized.
-  bool UpdateVisibleTiles();
+  void UpdateVisibleTiles();
 
   scoped_refptr<Tile> CreateTile(RasterSource* raster_source,
                                  const gfx::Size& tile_size,
                                  const gfx::Rect& content_rect,
                                  float contents_scale,
                                  int layer_id,
                                  int source_frame_number,
                                  int flags);
 
   scoped_refptr<base::debug::ConvertableToTraceFormat> BasicStateAsValue()
@@ skipping 124 matching lines @@
   const size_t scheduled_raster_task_limit_;
 
   typedef base::hash_map<Tile::Id, Tile*> TileMap;
   TileMap tiles_;
 
   bool all_tiles_that_need_to_be_rasterized_are_scheduled_;
   MemoryHistory::Entry memory_stats_from_last_assign_;
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;
 
-  bool did_initialize_visible_tile_;
   bool did_check_for_completed_tasks_since_last_schedule_tasks_;
   bool did_oom_on_last_assign_;
 
   typedef base::hash_map<uint32_t, scoped_refptr<ImageDecodeTask>>
       PixelRefTaskMap;
   typedef base::hash_map<int, PixelRefTaskMap> LayerPixelRefTaskMap;
   LayerPixelRefTaskMap image_decode_tasks_;
 
   typedef base::hash_map<int, int> LayerCountMap;
   LayerCountMap used_layer_counts_;
@@ skipping 15 matching lines @@
   RasterTilePriorityQueue raster_priority_queue_;
   EvictionTilePriorityQueue eviction_priority_queue_;
   bool eviction_priority_queue_is_up_to_date_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_RESOURCES_TILE_MANAGER_H_