Spec compliant video constraints for getUserMedia behind flag.

content/renderer/media_capture_from_element/canvas_capture_handler.cc

 // Copyright 2015 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_capture_from_element/canvas_capture_handler.h"
 
 #include <utility>
 
 #include "base/base64.h"
 #include "base/bind_helpers.h"
@@ skipping 154 matching lines @@
 
 void CanvasCaptureHandler::StartVideoCapture(
     const media::VideoCaptureParams& params,
     const media::VideoCapturerSource::VideoCaptureDeliverFrameCB&
         new_frame_callback,
     const media::VideoCapturerSource::RunningCallback& running_callback) {
   DVLOG(3) << __func__ << " requested "
            << media::VideoCaptureFormat::ToString(params.requested_format);
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   DCHECK(params.requested_format.IsValid());
-
-  // TODO(emircan): Accomodate to the given frame rate constraints here.
   capture_format_ = params.requested_format;
   delegate_.reset(new CanvasCaptureHandlerDelegate(new_frame_callback));
   DCHECK(delegate_);
   ask_for_new_frame_ = true;
   running_callback.Run(true);
 }
 
 void CanvasCaptureHandler::RequestRefreshFrame() {
   DVLOG(3) << __func__;
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
@@ skipping 73 matching lines @@
   const blink::WebString track_id = blink::WebString::fromASCII(str_track_id);
   blink::WebMediaStreamSource webkit_source;
   std::unique_ptr<MediaStreamVideoSource> media_stream_source(
       new MediaStreamVideoCapturerSource(
           MediaStreamSource::SourceStoppedCallback(), std::move(source)));
   webkit_source.initialize(track_id, blink::WebMediaStreamSource::TypeVideo,
                            track_id, false);
   webkit_source.setExtraData(media_stream_source.get());
 
   web_track->initialize(webkit_source);
-  blink::WebMediaConstraints constraints;
-  constraints.initialize();
   web_track->setTrackData(new MediaStreamVideoTrack(
-      media_stream_source.release(), constraints,
+      media_stream_source.release(),
       MediaStreamVideoSource::ConstraintsCallback(), true));
 }
 
 }  // namespace content