cc: Send notification of tasks completion directly without scheduling.

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>
 
@@ skipping 250 matching lines @@
       MemoryUsage* usage);
   std::unique_ptr<EvictionTilePriorityQueue>
   FreeTileResourcesWithLowerPriorityUntilUsageIsWithinLimit(
       std::unique_ptr<EvictionTilePriorityQueue> eviction_priority_queue,
       const MemoryUsage& limit,
       const TilePriority& oother_priority,
       MemoryUsage* usage);
   bool TilePriorityViolatesMemoryPolicy(const TilePriority& priority);
   bool AreRequiredTilesReadyToDraw(RasterTilePriorityQueue::Type type) const;
   void CheckIfMoreTilesNeedToBePrepared();
-  void CheckAndIssueSignals();
+  void CheckAndNotifyReadyToActivate();
+  void CheckAndNotifyReadyToDraw();
+  void CheckAndNotifyAllTileTasksCompleted();
   bool MarkTilesOutOfMemory(
       std::unique_ptr<RasterTilePriorityQueue> queue) const;
 
   ResourceFormat DetermineResourceFormat(const Tile* tile) const;
   bool DetermineResourceRequiresSwizzle(const Tile* tile) const;
 
   void DidFinishRunningTileTasksRequiredForActivation();
   void DidFinishRunningTileTasksRequiredForDraw();
   void DidFinishRunningAllTileTasks();
 
@@ skipping 27 matching lines @@
 
   std::vector<Tile*> released_tiles_;
 
   std::vector<scoped_refptr<TileTask>> orphan_tasks_;
 
   TaskGraph graph_;
   scoped_refptr<TileTask> required_for_activation_done_task_;
   scoped_refptr<TileTask> required_for_draw_done_task_;
   scoped_refptr<TileTask> all_done_task_;
 
-  UniqueNotifier more_tiles_need_prepare_check_notifier_;
-
-  struct Signals {
-    Signals();
-
-    void reset();
-
-    bool ready_to_activate;
-    bool did_notify_ready_to_activate;
-    bool ready_to_draw;
-    bool did_notify_ready_to_draw;
-    bool all_tile_tasks_completed;
-    bool did_notify_all_tile_tasks_completed;
-  } signals_;
-
-  UniqueNotifier signals_check_notifier_;
-
   bool has_scheduled_tile_tasks_;
 
   uint64_t prepare_tiles_count_;
   uint64_t next_tile_id_;
 
   std::unordered_map<Tile::Id, std::vector<DrawImage>> scheduled_draw_images_;
 
   base::WeakPtrFactory<TileManager> task_set_finished_weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_TILE_MANAGER_H_