Detect situation when there is no missing send completion signal in P2PSocket implementation.

content/renderer/p2p/socket_client_delegate.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_P2P_SOCKET_CLIENT_DELEGATE_H_
 #define CONTENT_RENDERER_P2P_SOCKET_CLIENT_DELEGATE_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
@@ skipping 13 matching lines @@
   // you should not rely on the local endpoint address if possible.
   virtual void OnOpen(const net::IPEndPoint& local_address,
                       const net::IPEndPoint& remote_address) = 0;
 
   // For a socket that is listening on incoming TCP connectsion, this
   // function is called when a new client connects.
   virtual void OnIncomingTcpConnection(const net::IPEndPoint& address,
                                        P2PSocketClient* client) = 0;
 
   // Called once for each Send() call after the send is complete.
-  virtual void OnSendComplete() = 0;
+  virtual void OnSendComplete(const P2PSendPacketMetrics& send_metrics) = 0;
 
   // Called if an non-retryable error occurs.
   virtual void OnError() = 0;
 
   // Called when data is received on the socket.
   virtual void OnDataReceived(const net::IPEndPoint& address,
                               const std::vector<char>& data,
                               const base::TimeTicks& timestamp) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_P2P_SOCKET_CLIENT_DELEGATE_H_