Reland Connect TurnPort and TCPPort to AsyncPacketSocket::SignalSentPacket.

webrtc/p2p/base/port.h

 /*
  *  Copyright 2004 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 262 matching lines @@
                          std::string* local_username,
                          std::string* remote_username) const;
   void CreateStunUsername(const std::string& remote_username,
                           std::string* stun_username_attr_str) const;
 
   bool MaybeIceRoleConflict(const rtc::SocketAddress& addr,
                             IceMessage* stun_msg,
                             const std::string& remote_ufrag);
 
   // Called when a packet has been sent to the socket.
-  void OnSentPacket(const rtc::SentPacket& sent_packet);
+  // This is made pure virtual to notify subclasses of Port that they MUST
+  // listen to AsyncPacketSocket::SignalSentPacket and then call
+  // PortInterface::OnSentPacket.
+  virtual void OnSentPacket(rtc::AsyncPacketSocket* socket,
+                            const rtc::SentPacket& sent_packet) = 0;
 
   // Called when the socket is currently able to send.
   void OnReadyToSend();
 
   // Called when the Connection discovers a local peer reflexive candidate.
   // Returns the index of the new local candidate.
   size_t AddPrflxCandidate(const Candidate& local);
 
   void set_candidate_filter(uint32_t candidate_filter) {
     candidate_filter_ = candidate_filter;
@@ skipping 355 matching lines @@
            const rtc::PacketOptions& options) override;
   int GetError() override { return error_; }
 
  private:
   int error_ = 0;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_PORT_H_