cc: Remove ScheduleOnOriginThread() and CompleteOnOriginThread().

cc/tiles/image_decode_controller.h

 // Copyright 2015 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_IMAGE_DECODE_CONTROLLER_H_
 #define CC_TILES_IMAGE_DECODE_CONTROLLER_H_
 
 #include "base/memory/ref_counted.h"
 #include "cc/playback/decoded_draw_image.h"
 #include "cc/playback/draw_image.h"
 
 namespace cc {
 
 class ImageDecodeTask;
+class Task;
 
 // ImageDecodeController is responsible for generating decode tasks, decoding
 // images, storing images in cache, and being able to return the decoded images
 // when requested.
 
 // ImageDecodeController is responsible for the following things:
 // 1. Given a DrawImage, it can return an ImageDecodeTask which when run will
 //    decode and cache the resulting image. If the image does not need a task to
 //    be decoded, then nullptr will be returned. The return value of the
 //    function indicates whether the image was or is going to be locked, so an
@@ skipping 27 matching lines @@
   // predecoded.
   //
   // This is called by a raster task (on a worker thread) when an image is
   // required.
   virtual DecodedDrawImage GetDecodedImageForDraw(const DrawImage& image) = 0;
   // Unrefs an image. This should be called for every GetDecodedImageForDraw
   // when the draw with the image is finished.
   virtual void DrawWithImageFinished(const DrawImage& image,
                                      const DecodedDrawImage& decoded_image) = 0;
 
+  virtual void CompleteTask(Task* task) = 0;
+
   // This function informs the controller that now is a good time to clean up
   // memory. This is called periodically from the compositor thread.
   virtual void ReduceCacheUsage() = 0;
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_IMAGE_DECODE_CONTROLLER_H_