cc: Remove ScheduleOnOriginThread() and CompleteOnOriginThread().

cc/tiles/tile_manager.h

Index: cc/tiles/tile_manager.h
diff --git a/cc/tiles/tile_manager.h b/cc/tiles/tile_manager.h
index 94eac03f030fb6114cd53958accef8b83f36fab0..3acb0ed3057559c6c0efb2ac617bdf1a92e6520e 100644
--- a/cc/tiles/tile_manager.h
+++ b/cc/tiles/tile_manager.h
@@ -242,10 +242,8 @@ class CC_EXPORT TileManager {
     int resource_count_;
   };
 
-  void OnRasterTaskCompleted(
-      Tile::Id tile,
-      Resource* resource,
-      bool was_canceled);
+  void CheckAndProcessCompletedTasks();
+  void CompleteRasterTask(Tile* tile, Resource* resource, bool was_canceled);
 
   void FreeResourcesForTile(Tile* tile);
   void FreeResourcesForTileAndNotifyClientIfTileWasReadyToDraw(Tile* tile);
@@ -298,7 +296,7 @@ class CC_EXPORT TileManager {
   bool all_tiles_that_need_to_be_rasterized_are_scheduled_;
   MemoryHistory::Entry memory_stats_from_last_assign_;
 
-  bool did_check_for_completed_tasks_since_last_schedule_tasks_;
+  bool did_check_and_process_completed_tasks_since_last_schedule_tasks_;
   bool did_oom_on_last_assign_;
 
   ImageDecodeController* image_decode_controller_;