Update {virtual,override,final} to follow C++11 style in chrome/browser/chromeos/input_method.

chrome/browser/chromeos/input_method/browser_state_monitor.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 CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_
 #define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/base/ime/chromeos/input_method_manager.h"
 
 namespace chromeos {
 namespace input_method {
 
 // Translates notifications from the browser (not logged in, logged in, etc.),
 // into InputMethodManager::UISessionState transitions.
 class BrowserStateMonitor : public content::NotificationObserver {
  public:
   // Constructs a monitor that will invoke the given observer callback whenever
   // the InputMethodManager::UISessionState changes. Assumes that the current
   // ui_session_ is STATE_LOGIN_SCREEN. |observer| may be null.
   explicit BrowserStateMonitor(
       const base::Callback<void(InputMethodManager::UISessionState)>& observer);
-  virtual ~BrowserStateMonitor();
+  ~BrowserStateMonitor() override;
 
   InputMethodManager::UISessionState ui_session() const { return ui_session_; }
 
   // content::NotificationObserver overrides:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
  private:
   base::Callback<void(InputMethodManager::UISessionState)> observer_;
   InputMethodManager::UISessionState ui_session_;
   content::NotificationRegistrar notification_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserStateMonitor);
 };
 
 }  // namespace input_method
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_