Fix MultiPictureDraw issues with GpuImageDecodeController

cc/playback/raster_source.cc

 // Copyright 2014 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.
 
 #include "cc/playback/raster_source.h"
 
 #include <stddef.h>
 
 #include "base/trace_event/trace_event.h"
 #include "cc/base/region.h"
@@ skipping 278 matching lines @@
 
 bool RasterSource::CanUseLCDText() const {
   return can_use_lcd_text_;
 }
 
 scoped_refptr<RasterSource> RasterSource::CreateCloneWithoutLCDText() const {
   bool can_use_lcd_text = false;
   return scoped_refptr<RasterSource>(new RasterSource(this, can_use_lcd_text));
 }
 
-void RasterSource::SetImageDecodeController(
-    ImageDecodeController* image_decode_controller) {
-  DCHECK(image_decode_controller);
-  image_decode_controller_ = image_decode_controller;
-}
-
 RasterSource::PlaybackSettings::PlaybackSettings()
     : playback_to_shared_canvas(false),
       skip_images(false),
       use_image_hijack_canvas(true) {}
 
 }  // namespace cc