Reland of "Revert of Update the BWE when the network route changes.

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 590 matching lines @@
 void BaseChannel::OnSelectedCandidatePairChanged(
     TransportChannel* channel,
     CandidatePairInterface* selected_candidate_pair,
     int last_sent_packet_id) {
   ASSERT(channel == transport_channel_ || channel == rtcp_transport_channel_);
   RTC_DCHECK(network_thread_->IsCurrent());
   std::string transport_name = channel->transport_name();
   rtc::NetworkRoute network_route;
   if (selected_candidate_pair) {
     network_route = rtc::NetworkRoute(
+        selected_candidate_pair->ReadyToSendMedia(),
         selected_candidate_pair->local_candidate().network_id(),
         selected_candidate_pair->remote_candidate().network_id(),
         last_sent_packet_id);
   }
   invoker_.AsyncInvoke<void>(
       RTC_FROM_HERE, worker_thread_,
       Bind(&MediaChannel::OnNetworkRouteChanged, media_channel_, transport_name,
            network_route));
 }
 
@@ skipping 1806 matching lines @@
 }
 
 void DataChannel::OnStreamClosedRemotely(uint32_t sid) {
   rtc::TypedMessageData<uint32_t>* message =
       new rtc::TypedMessageData<uint32_t>(sid);
   signaling_thread()->Post(RTC_FROM_HERE, this, MSG_STREAMCLOSEDREMOTELY,
                            message);
 }
 
 }  // namespace cricket