Wire up transport sequence number / send time callbacks to webrtc via libjingle.

webrtc/p2p/base/p2ptransportchannel.cc

Index: webrtc/p2p/base/p2ptransportchannel.cc
diff --git a/webrtc/p2p/base/p2ptransportchannel.cc b/webrtc/p2p/base/p2ptransportchannel.cc
index 1b7cb58756e0dc11bcc5abf63621c6787ef7380a..b0cfb6826f81a68b85af0e88034248218768e15a 100644
--- a/webrtc/p2p/base/p2ptransportchannel.cc
+++ b/webrtc/p2p/base/p2ptransportchannel.cc
@@ -254,6 +254,8 @@ void P2PTransportChannel::AddConnection(Connection* connection) {
   connection->set_receiving_timeout(receiving_timeout_);
   connection->SignalReadPacket.connect(
       this, &P2PTransportChannel::OnReadPacket);
+  connection->SignalSentPacket.connect(this,
+                                       &P2PTransportChannel::OnPacketSent);

[pthatcher1, 2015/10/05 18:30:14]

I think the OnX should have the same name as the SignalX.  So would OnSentPacket
make more sense?

[stefan-webrtc, 2015/10/07 16:55:25]

Done. These should now all be aligned.

   connection->SignalReadyToSend.connect(
       this, &P2PTransportChannel::OnReadyToSend);
   connection->SignalStateChange.connect(
@@ -1356,6 +1358,13 @@ void P2PTransportChannel::OnReadPacket(Connection* connection,
   }
 }
 
+void P2PTransportChannel::OnPacketSent(Connection* connection,
+                                       const rtc::SentPacket& sent_packet) {
+  ASSERT(worker_thread_ == rtc::Thread::Current());
+
+  SignalSentPacket(this, sent_packet);
+}
+
 void P2PTransportChannel::OnReadyToSend(Connection* connection) {
   if (connection == best_connection_ && writable()) {
     SignalReadyToSend(this);