Reland Connect TurnPort and TCPPort to AsyncPacketSocket::SignalSentPacket.

webrtc/p2p/base/port_unittest.cc

Index: webrtc/p2p/base/port_unittest.cc
diff --git a/webrtc/p2p/base/port_unittest.cc b/webrtc/p2p/base/port_unittest.cc
index 34806d9a79e0b8e8cc36118cde518bd1989a6eda..449021ad9fb4c78004d237bc4dd37b1d36eee599 100644
--- a/webrtc/p2p/base/port_unittest.cc
+++ b/webrtc/p2p/base/port_unittest.cc
@@ -204,6 +204,10 @@ class TestPort : public Port {
   }
 
  private:
+  void OnSentPacket(rtc::AsyncPacketSocket* socket,
+                    const rtc::SentPacket& sent_packet) {
+    PortInterface::SignalSentPacket(sent_packet);
+  }
   rtc::scoped_ptr<ByteBuffer> last_stun_buf_;
   rtc::scoped_ptr<IceMessage> last_stun_msg_;
   int type_preference_ = 0;