Spec compliant video constraints for getUserMedia behind flag.

content/renderer/media/pepper_to_video_track_adapter.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/pepper_to_video_track_adapter.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 244 matching lines @@
 
   // Create a new webkit video track.
   blink::WebMediaStreamSource webkit_source;
   blink::WebMediaStreamSource::Type type =
       blink::WebMediaStreamSource::TypeVideo;
   blink::WebString webkit_track_id = blink::WebString::fromUTF8(track_id);
   webkit_source.initialize(webkit_track_id, type, webkit_track_id,
                            false /* remote */);
   webkit_source.setExtraData(writer);
 
-  blink::WebMediaConstraints constraints;
-  constraints.initialize();
   bool track_enabled = true;
-
   stream.addTrack(MediaStreamVideoTrack::CreateVideoTrack(
-      writer, constraints, MediaStreamVideoSource::ConstraintsCallback(),
-      track_enabled));
+      writer, MediaStreamVideoSource::ConstraintsCallback(), track_enabled));
 
   *frame_writer = new PpFrameWriterProxy(writer->AsWeakPtr());
   return true;
 }
 
 }  // namespace content