Adding "adapter" ORTC objects on top of ChannelManager/BaseChannel/etc.

webrtc/pc/channel.cc

 /*
  *  Copyright 2004 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 1240 matching lines @@
       ret = rtcp_mux_filter_.SetOffer(enable, src);
       break;
     case CA_PRANSWER:
       // This may activate RTCP muxing, but we don't yet destroy the transport
       // because the final answer may deactivate it.
       ret = rtcp_mux_filter_.SetProvisionalAnswer(enable, src);
       break;
     case CA_ANSWER:
       ret = rtcp_mux_filter_.SetAnswer(enable, src);
       if (ret && rtcp_mux_filter_.IsActive()) {
-        // We activated RTCP mux, close down the RTCP transport.
+        // We permanently activated RTCP muxing; signal that we no longer need
+        // the RTCP transport.
+        std::string debug_name = transport_name_.empty()
+                                     ? rtp_packet_transport_->debug_name()
+                                     : transport_name_;
+        ;
         LOG(LS_INFO) << "Enabling rtcp-mux for " << content_name()
-                     << " by destroying RTCP transport for "
-                     << transport_name();
+                     << "; no longer need RTCP transport for " << debug_name;
         if (rtcp_packet_transport_) {
           SetTransport_n(true, nullptr, nullptr);
           SignalRtcpMuxFullyActive(transport_name_);
         }
         UpdateWritableState_n();
         SetTransportChannelReadyToSend(true, false);
       }
       break;
     case CA_UPDATE:
       // No RTCP mux info.
@@ skipping 1178 matching lines @@
   signaling_thread()->Post(RTC_FROM_HERE, this, MSG_READYTOSENDDATA,
                            new DataChannelReadyToSendMessageData(writable));
 }
 
 void RtpDataChannel::GetSrtpCryptoSuites_n(
     std::vector<int>* crypto_suites) const {
   GetSupportedDataCryptoSuites(crypto_options(), crypto_suites);
 }
 
 }  // namespace cricket