Add signaling to support ICE renomination.

webrtc/api/peerconnection.h

 /*
  *  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 221 matching lines @@
   // Returns a MediaSessionOptions struct with options decided by
   // |constraints|, the local MediaStreams and DataChannels.
   // Deprecated, use version without constraints.
   virtual bool GetOptionsForAnswer(
       const MediaConstraintsInterface* constraints,
       cricket::MediaSessionOptions* session_options);
   virtual bool GetOptionsForAnswer(
       const RTCOfferAnswerOptions& options,
       cricket::MediaSessionOptions* session_options);
 
+  void InitializeOptionsForAnswer(
+      cricket::MediaSessionOptions* session_options);
+
   // Helper function for options processing.
   // Deprecated.
   virtual void FinishOptionsForAnswer(
       cricket::MediaSessionOptions* session_options);
 
   // Remove all local and remote tracks of type |media_type|.
   // Called when a media type is rejected (m-line set to port 0).
   void RemoveTracks(cricket::MediaType media_type);
 
   // Makes sure a MediaStreamTrack is created for each StreamParam in |streams|,
@@ skipping 168 matching lines @@
       rtc::scoped_refptr<RtpReceiverProxyWithInternal<RtpReceiverInternal>>>
       receivers_;
 
   std::unique_ptr<WebRtcSession> session_;
   std::unique_ptr<StatsCollector> stats_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_PEERCONNECTION_H_