Standardize usage of virtual/override/final in mojo/

mojo/services/network/network_service_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_NETWORK_SERVICE_IMPL_H_
 #define MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_
 
 #include "base/compiler_specific.h"
 #include "mojo/public/cpp/bindings/interface_impl.h"
 #include "mojo/services/public/interfaces/network/network_service.mojom.h"
 #include "url/gurl.h"
 
 namespace mojo {
 class ApplicationConnection;
 class NetworkContext;
 
 class NetworkServiceImpl : public InterfaceImpl<NetworkService> {
  public:
   NetworkServiceImpl(ApplicationConnection* connection,
                      NetworkContext* context);
-  virtual ~NetworkServiceImpl();
+  ~NetworkServiceImpl() override;
 
   // NetworkService methods:
-  virtual void CreateURLLoader(InterfaceRequest<URLLoader> loader) override;
-  virtual void GetCookieStore(InterfaceRequest<CookieStore> store) override;
-  virtual void CreateWebSocket(InterfaceRequest<WebSocket> socket) override;
-  virtual void CreateTCPBoundSocket(
+  void CreateURLLoader(InterfaceRequest<URLLoader> loader) override;
+  void GetCookieStore(InterfaceRequest<CookieStore> store) override;
+  void CreateWebSocket(InterfaceRequest<WebSocket> socket) override;
+  void CreateTCPBoundSocket(
       NetAddressPtr local_address,
       InterfaceRequest<TCPBoundSocket> bound_socket,
       const Callback<void(NetworkErrorPtr, NetAddressPtr)>& callback) override;
-  virtual void CreateTCPConnectedSocket(
+  void CreateTCPConnectedSocket(
       NetAddressPtr remote_address,
       ScopedDataPipeConsumerHandle send_stream,
       ScopedDataPipeProducerHandle receive_stream,
       InterfaceRequest<TCPConnectedSocket> client_socket,
       const Callback<void(NetworkErrorPtr, NetAddressPtr)>& callback) override;
-  virtual void CreateUDPSocket(InterfaceRequest<UDPSocket> socket) override;
+  void CreateUDPSocket(InterfaceRequest<UDPSocket> socket) override;
 
  private:
   NetworkContext* context_;
   GURL origin_;
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_NETWORK_NETWORK_SERVICE_IMPL_H_