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

content/renderer/p2p/socket_dispatcher.h

 // Copyright (c) 2012 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.
 
 // P2PSocketDispatcher is a per-renderer object that dispatchers all
 // P2P messages received from the browser and relays all P2P messages
 // sent to the browser. P2PSocketClient instances register themselves
 // with the dispatcher using RegisterClient() and UnregisterClient().
 //
 // Relationship of classes.
@@ skipping 78 matching lines @@
   void UnregisterHostAddressRequest(int id);
 
   // Incoming message handlers.
   void OnNetworkListChanged(const net::NetworkInterfaceList& networks);
   void OnGetHostAddressResult(int32 request_id,
                               const net::IPAddressList& addresses);
   void OnSocketCreated(int socket_id,
                        const net::IPEndPoint& local_address,
                        const net::IPEndPoint& remote_address);
   void OnIncomingTcpConnection(int socket_id, const net::IPEndPoint& address);
-  void OnSendComplete(int socket_id);
+  void OnSendComplete(int socket_id, const P2PSendPacketMetrics& send_metrics);
   void OnError(int socket_id);
   void OnDataReceived(int socket_id, const net::IPEndPoint& address,
                       const std::vector<char>& data,
                       const base::TimeTicks& timestamp);
 
   P2PSocketClientImpl* GetClient(int socket_id);
 
   scoped_refptr<base::MessageLoopProxy> message_loop_;
   IDMap<P2PSocketClientImpl> clients_;
 
   IDMap<P2PAsyncAddressResolver> host_address_requests_;
 
   bool network_notifications_started_;
   scoped_refptr<ObserverListThreadSafe<NetworkListObserver> >
       network_list_observers_;
 
   IPC::Sender* sender_;
 
   DISALLOW_COPY_AND_ASSIGN(P2PSocketDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_P2P_SOCKET_DISPATCHER_H_