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

webrtc/base/asyncudpsocket.cc

Index: webrtc/base/asyncudpsocket.cc
diff --git a/webrtc/base/asyncudpsocket.cc b/webrtc/base/asyncudpsocket.cc
index 3e2ecc4cda487697f6dbcef8c30590a9bec24a2e..51a8fa0af0a2a0cbd4126cba9ffa5647b1c32d15 100644
--- a/webrtc/base/asyncudpsocket.cc
+++ b/webrtc/base/asyncudpsocket.cc
@@ -60,13 +60,19 @@ SocketAddress AsyncUDPSocket::GetRemoteAddress() const {
 
 int AsyncUDPSocket::Send(const void *pv, size_t cb,
                          const rtc::PacketOptions& options) {
-  return socket_->Send(pv, cb);
+  rtc::SentPacket sent_packet(options.packet_id, rtc::Time());
+  int ret = socket_->Send(pv, cb);
+  SignalSentPacket(this, sent_packet);
+  return ret;
 }
 
 int AsyncUDPSocket::SendTo(const void *pv, size_t cb,
                            const SocketAddress& addr,
                            const rtc::PacketOptions& options) {
-  return socket_->SendTo(pv, cb, addr);
+  rtc::SentPacket sent_packet(options.packet_id, rtc::Time());
+  int ret = socket_->SendTo(pv, cb, addr);
+  SignalSentPacket(this, sent_packet);
+  return ret;
 }
 
 int AsyncUDPSocket::Close() {