Update from https://crrev.com/311076

net/tools/quic/quic_client.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.
 //
 // A toy client, which connects to a specified port and sends QUIC
 // request to that endpoint.
 
 #ifndef NET_TOOLS_QUIC_QUIC_CLIENT_H_
 #define NET_TOOLS_QUIC_QUIC_CLIENT_H_
 
@@ skipping 186 matching lines @@
     QuicPacketWriter* Create(QuicConnection* connection) const override;
 
    private:
     QuicPacketWriter* writer_;
   };
 
   // Used during initialization: creates the UDP socket FD, sets socket options,
   // and binds the socket to our address.
   bool CreateUDPSocket();
 
+  // If the socket has been created, then unregister and close() the FD.
+  void CleanUpUDPSocket();
+
   // Read a UDP packet and hand it to the framer.
   bool ReadAndProcessPacket();
 
   // Address of the server.
   const IPEndPoint server_address_;
 
   // |server_id_| is a tuple (hostname, port, is_https) of the server.
   QuicServerId server_id_;
 
   // config_ and crypto_config_ contain configuration and cached state about
@@ skipping 48 matching lines @@
   // when the stream is closed (in OnClose).
   bool print_response_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicClient);
 };
 
 }  // namespace tools
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_CLIENT_H_