Adding API for "presume writable when fully relayed" ICE option.

webrtc/api/webrtcsession.cc

 /*
  *  Copyright 2012 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 1118 matching lines @@
 cricket::IceConfig WebRtcSession::ParseIceConfig(
     const PeerConnectionInterface::RTCConfiguration& config) const {
   cricket::IceConfig ice_config;
   ice_config.receiving_timeout = config.ice_connection_receiving_timeout;
   ice_config.prioritize_most_likely_candidate_pairs =
       config.prioritize_most_likely_ice_candidate_pairs;
   ice_config.backup_connection_ping_interval =
       config.ice_backup_candidate_pair_ping_interval;
   ice_config.gather_continually = (config.continual_gathering_policy ==
                                    PeerConnectionInterface::GATHER_CONTINUALLY);
+  ice_config.presume_writable_when_fully_relayed =
+      config.presume_writable_when_fully_relayed;
   return ice_config;
 }
 
 void WebRtcSession::SetIceConfig(const cricket::IceConfig& config) {
   transport_controller_->SetIceConfig(config);
 }
 
 void WebRtcSession::MaybeStartGathering() {
   transport_controller_->MaybeStartGathering();
 }
@@ skipping 838 matching lines @@
                                                   ssl_cipher_suite);
   }
 }
 
 void WebRtcSession::OnSentPacket_w(const rtc::SentPacket& sent_packet) {
   RTC_DCHECK(worker_thread()->IsCurrent());
   media_controller_->call_w()->OnSentPacket(sent_packet);
 }
 
 }  // namespace webrtc