Require negotiation to send transport cc feedback over RTCP.

webrtc/video_receive_stream.h

 /*
  *  Copyright (c) 2013 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 95 matching lines @@
       // Extended RTCP settings.
       struct RtcpXr {
         // True if RTCP Receiver Reference Time Report Block extension
         // (RFC 3611) should be enabled.
         bool receiver_reference_time_report = false;
       } rtcp_xr;
 
       // See draft-alvestrand-rmcat-remb for information.
       bool remb = false;
 
+      // See draft-holmer-rmcat-transport-wide-cc-extensions for details.
+      bool transport_cc = false;
+
       // See NackConfig for description.
       NackConfig nack;
 
       // See FecConfig for description.
       FecConfig fec;
 
       // RTX settings for incoming video payloads that may be received. RTX is
       // disabled if there's no config present.
       struct Rtx {
         // SSRCs to use for the RTX streams.
@@ skipping 48 matching lines @@
     int target_delay_ms = 0;
   };
 
   // TODO(pbos): Add info on currently-received codec to Stats.
   virtual Stats GetStats() const = 0;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_RECEIVE_STREAM_H_