Standardize usage of virtual/override/final in net/

net/udp/datagram_server_socket.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.
 
 #ifndef NET_UDP_DATAGRAM_SERVER_SOCKET_H_
 #define NET_UDP_DATAGRAM_SERVER_SOCKET_H_
 
 #include "net/base/completion_callback.h"
 #include "net/base/net_util.h"
 #include "net/udp/datagram_socket.h"
 
 namespace net {
 
 class IPEndPoint;
 class IOBuffer;
 
 // A UDP Socket.
 class NET_EXPORT DatagramServerSocket : public DatagramSocket {
  public:
-  virtual ~DatagramServerSocket() {}
+  ~DatagramServerSocket() override {}
 
   // Initialize this socket as a server socket listening at |address|.
   // Returns a network error code.
   virtual int Listen(const IPEndPoint& address) = 0;
 
   // Read from a socket and receive sender address information.
   // |buf| is the buffer to read data into.
   // |buf_len| is the maximum amount of data to read.
   // |address| is a buffer provided by the caller for receiving the sender
   //   address information about the received data.  This buffer must be kept
@@ skipping 75 matching lines @@
   // some platforms. Returns a network error code.
   virtual int SetDiffServCodePoint(DiffServCodePoint dscp) = 0;
 
   // Resets the thread to be used for thread-safety checks.
   virtual void DetachFromThread() = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_UDP_DATAGRAM_SERVER_SOCKET_H_