Change MediaStreamVideoSource to output different resolutions to different tracks depending on the …

content/renderer/media/mock_media_stream_video_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 "content/renderer/media/mock_media_stream_video_source.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/location.h"
 
@@ skipping 66 matching lines @@
       FROM_HERE,
       base::Bind(&MockMediaStreamVideoSource::DeliverVideoFrameOnIO,
                  base::Unretained(this), frame, params_.requested_format,
                  frame_callback_));
 }
 
 void MockMediaStreamVideoSource::DeliverVideoFrameOnIO(
     const scoped_refptr<media::VideoFrame>& frame,
     media::VideoCaptureFormat format,
     const VideoCaptureDeliverFrameCB& frame_callback) {
-  DCHECK(io_message_loop()->BelongsToCurrentThread());
   frame_callback.Run(frame, format);
 }
 
 }  // namespace content