New resolution change policies for desktop and tab capture.

content/renderer/media/webrtc/video_destination_handler.cc

 // Copyright (c) 2013 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/webrtc/video_destination_handler.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 73 matching lines @@
   DCHECK(CalledOnValidThread());
   DVLOG(3) << "PpFrameWriter::GetCurrentSupportedFormats()";
   // Since the input is free to change the resolution at any point in time
   // the supported formats are unknown.
   media::VideoCaptureFormats formats;
   callback.Run(formats);
 }
 
 void PpFrameWriter::StartSourceImpl(
     const media::VideoCaptureFormat& format,
+    const blink::WebMediaConstraints& constraints,
     const VideoCaptureDeliverFrameCB& frame_callback) {
   DCHECK(CalledOnValidThread());
   DCHECK(!delegate_.get());
   DVLOG(3) << "PpFrameWriter::StartSourceImpl()";
   delegate_ = new FrameWriterDelegate(io_message_loop(), frame_callback);
   OnStartDone(MEDIA_DEVICE_OK);
 }
 
 void PpFrameWriter::StopSourceImpl() {
   DCHECK(CalledOnValidThread());
@@ skipping 123 matching lines @@
 
   stream.addTrack(MediaStreamVideoTrack::CreateVideoTrack(
       writer, constraints, MediaStreamVideoSource::ConstraintsCallback(),
       track_enabled));
 
   *frame_writer = new PpFrameWriterProxy(writer->AsWeakPtr());
   return true;
 }
 
 }  // namespace content