Move responsibility for RTP header extensions on video receive.

call/flexfec_receive_stream.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 54 matching lines @@
 
     // What RTCP mode to use in the reports.
     RtcpMode rtcp_mode = RtcpMode::kCompound;
 
     // Transport for outgoing RTCP packets.
     Transport* rtcp_send_transport = nullptr;
 
     // |transport_cc| is true whenever the send-side BWE RTCP feedback message
     // has been negotiated. This is a prerequisite for enabling send-side BWE.
     bool transport_cc = false;
-
-    // RTP header extensions that have been negotiated for this track.
-    std::vector<RtpExtension> rtp_header_extensions;
   };
 
   virtual Stats GetStats() const = 0;
 
   virtual const Config& GetConfig() const = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // CALL_FLEXFEC_RECEIVE_STREAM_H_