Standardize usage of virtual/override/final in sandbox/

sandbox/mac/xpc_message_server.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 SANDBOX_MAC_XPC_MESSAGE_SERVER_H_
 #define SANDBOX_MAC_XPC_MESSAGE_SERVER_H_
 
 #include "base/mac/scoped_mach_port.h"
 #include "base/memory/scoped_ptr.h"
 #include "sandbox/mac/message_server.h"
 #include "sandbox/mac/xpc.h"
 #include "sandbox/sandbox_export.h"
 
 namespace sandbox {
 
 class DispatchSourceMach;
 
 // An implementation of MessageServer that uses XPC pipes to read and write XPC
 // messages from a Mach port.
 class SANDBOX_EXPORT XPCMessageServer : public MessageServer {
  public:
   // Creates a new XPC message server that will send messages to |demuxer|
   // for handling. If the |server_receive_right| is non-NULL, this class will
   // take ownership of the port and it will be used to receive messages.
   // Otherwise the server will create a new receive right on which to listen.
   XPCMessageServer(MessageDemuxer* demuxer,
                    mach_port_t server_receive_right);
-  virtual ~XPCMessageServer();
+  ~XPCMessageServer() override;
 
   // MessageServer:
-  virtual bool Initialize() override;
-  virtual pid_t GetMessageSenderPID(IPCMessage request) override;
-  virtual IPCMessage CreateReply(IPCMessage request) override;
-  virtual bool SendReply(IPCMessage reply) override;
-  virtual void ForwardMessage(IPCMessage request,
-                              mach_port_t destination) override;
+  bool Initialize() override;
+  pid_t GetMessageSenderPID(IPCMessage request) override;
+  IPCMessage CreateReply(IPCMessage request) override;
+  bool SendReply(IPCMessage reply) override;
+  void ForwardMessage(IPCMessage request, mach_port_t destination) override;
   // Creates an error reply message with a field "error" set to |error_code|.
-  virtual void RejectMessage(IPCMessage request, int error_code) override;
-  virtual mach_port_t GetServerPort() const override;
+  void RejectMessage(IPCMessage request, int error_code) override;
+  mach_port_t GetServerPort() const override;
 
  private:
   // Reads a message from the XPC pipe.
   void ReceiveMessage();
 
   // The demuxer delegate. Weak.
   MessageDemuxer* demuxer_;
 
   // The Mach port on which the server is receiving requests.
   base::mac::ScopedMachReceiveRight server_port_;
 
   // MACH_RECV dispatch source that handles the |server_port_|.
   scoped_ptr<DispatchSourceMach> dispatch_source_;
 
   // The reply message, if one has been created.
   xpc_object_t reply_message_;
 
   DISALLOW_COPY_AND_ASSIGN(XPCMessageServer);
 };
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_MAC_XPC_MESSAGE_SERVER_H_