Move passing of WebRTC rendering frames to IO thread

content/shell/renderer/layout_test/test_media_stream_renderer_factory.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 "content/shell/renderer/layout_test/test_media_stream_renderer_factory.h"
 
 #include "content/shell/renderer/layout_test/test_media_stream_video_renderer.h"
 #include "media/media_features.h"
 #include "third_party/WebKit/public/platform/WebMediaStream.h"
 #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
@@ skipping 26 matching lines @@
 
 TestMediaStreamRendererFactory::TestMediaStreamRendererFactory() {}
 
 TestMediaStreamRendererFactory::~TestMediaStreamRendererFactory() {}
 
 scoped_refptr<MediaStreamVideoRenderer>
 TestMediaStreamRendererFactory::GetVideoRenderer(
     const blink::WebMediaStream& web_stream,
     const base::Closure& error_cb,
     const MediaStreamVideoRenderer::RepaintCB& repaint_cb,
-    const scoped_refptr<base::SingleThreadTaskRunner>& compositor_task_runner,
+    const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
     const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
     const scoped_refptr<base::TaskRunner>& worker_task_runner,
     media::GpuVideoAcceleratorFactories* gpu_factories) {
   if (!IsMockMediaStreamWithVideo(web_stream))
     return NULL;
 
   return new TestMediaStreamVideoRenderer(
       gfx::Size(kVideoCaptureWidth, kVideoCaptureHeight),
       base::TimeDelta::FromMilliseconds(kVideoCaptureFrameDurationMs),
       error_cb,
       repaint_cb);
 }
 
 scoped_refptr<MediaStreamAudioRenderer>
 TestMediaStreamRendererFactory::GetAudioRenderer(
     const blink::WebMediaStream& web_stream,
     int render_frame_id,
     const std::string& device_id,
     const url::Origin& security_origin) {
   return NULL;
 }
 
 }  // namespace content