cc: Remove ScheduleOnOriginThread() and CompleteOnOriginThread().

cc/raster/tile_task_worker_pool.h

Index: cc/raster/tile_task_worker_pool.h
diff --git a/cc/raster/tile_task_worker_pool.h b/cc/raster/tile_task_worker_pool.h
index e56807f16e85f3b542c54bf7069baaaa0c0782ba..fa6ba07d9ef293296f3cb7cc6d23ac31270911e5 100644
--- a/cc/raster/tile_task_worker_pool.h
+++ b/cc/raster/tile_task_worker_pool.h
@@ -24,11 +24,6 @@ class CC_EXPORT TileTaskWorkerPool {
   TileTaskWorkerPool();
   virtual ~TileTaskWorkerPool();
 
-  // Utility function that can be used to call ::ScheduleOnOriginThread() for
-  // each task in |graph|.
-  static void ScheduleTasksOnOriginThread(TileTaskClient* client,
-                                          TaskGraph* graph);
-
   // Utility function that will create a temporary bitmap and copy pixels to
   // |memory| when necessary. The |canvas_bitmap_rect| is the rect of the bitmap
   // being played back in the pixel space of the source, ie a rect in the source