Move passing of WebRTC rendering frames to IO thread

content/shell/renderer/layout_test/test_media_stream_renderer_factory.h

 // 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.
 
 #ifndef CONTENT_SHELL_RENDERER_LAYOUT_TEST_TEST_MEDIA_STREAM_RENDERER_FACTORY_H_
 #define CONTENT_SHELL_RENDERER_LAYOUT_TEST_TEST_MEDIA_STREAM_RENDERER_FACTORY_H_
 
 #include "base/callback_forward.h"
 #include "content/public/renderer/media_stream_renderer_factory.h"
 
 namespace content {
 
 // TestMediaStreamClient is a mock implementation of MediaStreamClient used when
 // running layout tests.
 class TestMediaStreamRendererFactory : public MediaStreamRendererFactory {
  public:
   TestMediaStreamRendererFactory();
   ~TestMediaStreamRendererFactory() override;
 
   // MediaStreamRendererFactory implementation.
   scoped_refptr<MediaStreamVideoRenderer> 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) override;
 
   scoped_refptr<MediaStreamAudioRenderer> GetAudioRenderer(
       const blink::WebMediaStream& web_stream,
       int render_frame_id,
       const std::string& device_id,
       const url::Origin& security_origin) override;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_RENDERER_LAYOUT_TEST_TEST_MEDIA_STREAM_RENDERER_FACTORY_H_