Revert of Connect TurnPort and TCPPort to AsyncPacketSocket::SignalSentPacket.

webrtc/p2p/base/relayport.h

Index: webrtc/p2p/base/relayport.h
diff --git a/webrtc/p2p/base/relayport.h b/webrtc/p2p/base/relayport.h
index fdbf6e6f986a8fcaf887b99e09b28994c1eda91a..4b74b91ade67ac62a74e4bc1c6e8ef715fe0db1a 100644
--- a/webrtc/p2p/base/relayport.h
+++ b/webrtc/p2p/base/relayport.h
@@ -29,7 +29,7 @@
 // is created. The RelayEntry will try to reach the remote destination
 // by connecting to all available server addresses in a pre defined
 // order with a small delay in between. When a connection is
-// successful all other connection attempts are aborted.
+// successful all other connection attemts are aborted.
 class RelayPort : public Port {
  public:
   typedef std::pair<rtc::Socket::Option, int> OptionValue;
@@ -96,11 +96,6 @@
                     ProtocolType proto,
                     const rtc::PacketTime& packet_time);
 
-  // The OnSentPacket callback is left empty here since they are handled by
-  // RelayEntry.
-  void OnSentPacket(rtc::AsyncPacketSocket* socket,
-                    const rtc::SentPacket& sent_packet) override {}
-
  private:
   friend class RelayEntry;