Standardize usage of virtual/override/final in mojo/

mojo/services/network/tcp_connected_socket_impl.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 MOJO_SERVICES_NETWORK_TCP_CONNECTED_SOCKET_H_
 #define MOJO_SERVICES_NETWORK_TCP_CONNECTED_SOCKET_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/common/handle_watcher.h"
 #include "mojo/public/cpp/bindings/interface_impl.h"
 #include "mojo/services/public/interfaces/network/tcp_connected_socket.mojom.h"
 #include "net/socket/tcp_socket.h"
 
 namespace mojo {
 
 class MojoToNetPendingBuffer;
 class NetToMojoPendingBuffer;
 
 class TCPConnectedSocketImpl : public InterfaceImpl<TCPConnectedSocket> {
  public:
   TCPConnectedSocketImpl(scoped_ptr<net::TCPSocket> socket,
                          ScopedDataPipeConsumerHandle send_stream,
                          ScopedDataPipeProducerHandle receive_stream);
-  virtual ~TCPConnectedSocketImpl();
+  ~TCPConnectedSocketImpl() override;
 
  private:
   // "Receiving" in this context means reading from TCPSocket and writing to
   // the Mojo receive_stream.
   void ReceiveMore();
   void OnReceiveStreamReady(MojoResult result);
   void DidReceive(bool completed_synchronously, int result);
 
   // "Writing" is reading from the Mojo send_stream and writing to the
   // TCPSocket.
@@ skipping 16 matching lines @@
   ScopedDataPipeProducerHandle receive_stream_;
   common::HandleWatcher send_handle_watcher_;
   scoped_refptr<MojoToNetPendingBuffer> pending_send_;
 
   base::WeakPtrFactory<TCPConnectedSocketImpl> weak_ptr_factory_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_NETWORK_TCP_CONNECTED_SOCKET_H_