cc: Add image decode control in the compositor.

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 <deque>
 #include <queue>
 #include <set>
@@ skipping 124 matching lines @@
   void Flush();
 
   ScopedTilePtr CreateTile(const Tile::CreateInfo& info,
                            int layer_id,
                            int source_frame_number,
                            int flags);
 
   bool IsReadyToActivate() const;
   bool IsReadyToDraw() const;
 
+  ImageDecodeController* GetImageDecodeController() {
+    return &image_decode_controller_;
+  }
+
   scoped_refptr<base::trace_event::ConvertableToTraceFormat> BasicStateAsValue()
       const;
   void BasicStateAsValueInto(base::trace_event::TracedValue* dict) const;
   const MemoryHistory::Entry& memory_stats_from_last_assign() const {
     return memory_stats_from_last_assign_;
   }
 
   // Public methods for testing.
   void InitializeTilesWithResourcesForTesting(const std::vector<Tile*>& tiles) {
     for (size_t i = 0; i < tiles.size(); ++i) {
@@ skipping 175 matching lines @@
     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_;
 
+  base::hash_map<Tile::Id, std::vector<DrawImage>> scheduled_draw_images_;
+
   DISALLOW_COPY_AND_ASSIGN(TileManager);
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_TILE_MANAGER_H_