Standardize usage of virtual/override/final in remoting/

remoting/host/curtain_mode_mac.cc

 // 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.
 
 #include "remoting/host/curtain_mode.h"
 
 #include <ApplicationServices/ApplicationServices.h>
 #include <Carbon/Carbon.h>
 #include <Security/Security.h>
 #include <unistd.h>
@@ skipping 208 matching lines @@
 }  // namespace
 
 namespace remoting {
 
 class CurtainModeMac : public CurtainMode {
  public:
   CurtainModeMac(
       scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
       scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
       base::WeakPtr<ClientSessionControl> client_session_control);
-  virtual ~CurtainModeMac();
+  ~CurtainModeMac() override;
 
   // Overriden from CurtainMode.
-  virtual bool Activate() override;
+  bool Activate() override;
 
  private:
   scoped_refptr<SessionWatcher> session_watcher_;
 
   DISALLOW_COPY_AND_ASSIGN(CurtainModeMac);
 };
 
 CurtainModeMac::CurtainModeMac(
     scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
@@ skipping 15 matching lines @@
 // static
 scoped_ptr<CurtainMode> CurtainMode::Create(
     scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
     base::WeakPtr<ClientSessionControl> client_session_control) {
   return make_scoped_ptr(new CurtainModeMac(
       caller_task_runner, ui_task_runner, client_session_control));
 }
 
 }  // namespace remoting