Move direct use of VideoCapturer::VideoAdapter to VideoSinkWants.

webrtc/media/base/videobroadcaster.h

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 33 matching lines @@
              VideoSinkWants wants)
         : sink(sink), wants(wants) {}
     VideoSinkInterface<cricket::VideoFrame>* sink;
     VideoSinkWants wants;
   };
   SinkPair* FindSinkPair(const VideoSinkInterface<cricket::VideoFrame>* sink);
 
   ThreadChecker thread_checker_;
 
   VideoSinkWants current_wants_;
-
   std::vector<SinkPair> sinks_;
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_