Add the last_sent_packet_id to the candidate pair change signal

webrtc/p2p/base/dtlstransportchannel.cc

 /*
  *  Copyright 2011 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 620 matching lines @@
 }
 
 void DtlsTransportChannelWrapper::OnRouteChange(
     TransportChannel* channel, const Candidate& candidate) {
   ASSERT(channel == channel_);
   SignalRouteChange(this, candidate);
 }
 
 void DtlsTransportChannelWrapper::OnSelectedCandidatePairChanged(
     TransportChannel* channel,
-    CandidatePairInterface* selected_candidate_pair) {
+    CandidatePairInterface* selected_candidate_pair,
+    int last_sent_packet_id) {
   ASSERT(channel == channel_);
-  SignalSelectedCandidatePairChanged(this, selected_candidate_pair);
+  SignalSelectedCandidatePairChanged(this, selected_candidate_pair,
+                                     last_sent_packet_id);
 }
 
 void DtlsTransportChannelWrapper::OnConnectionRemoved(
     TransportChannelImpl* channel) {
   ASSERT(channel == channel_);
   SignalConnectionRemoved(this);
 }
 
 void DtlsTransportChannelWrapper::Reconnect() {
   set_dtls_state(DTLS_TRANSPORT_NEW);
   set_writable(false);
   if (channel_->writable()) {
     OnWritableState(channel_);
   }
 }
 
 }  // namespace cricket