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

chrome/browser/chromeos/login/ui/user_adding_screen.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
 
 #include "base/bind.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 10 matching lines @@
 #include "ash/system/tray/system_tray.h"
 #include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
 #endif
 
 namespace chromeos {
 
 namespace {
 
 class UserAddingScreenImpl : public UserAddingScreen {
  public:
-  virtual void Start() override;
-  virtual void Cancel() override;
-  virtual bool IsRunning() override;
+  void Start() override;
+  void Cancel() override;
+  bool IsRunning() override;
 
-  virtual void AddObserver(Observer* observer) override;
-  virtual void RemoveObserver(Observer* observer) override;
+  void AddObserver(Observer* observer) override;
+  void RemoveObserver(Observer* observer) override;
 
   static UserAddingScreenImpl* GetInstance();
  private:
   friend struct DefaultSingletonTraits<UserAddingScreenImpl>;
 
   void OnDisplayHostCompletion();
 
   UserAddingScreenImpl();
-  virtual ~UserAddingScreenImpl();
+  ~UserAddingScreenImpl() override;
 
   ObserverList<Observer> observers_;
   LoginDisplayHost* display_host_;
 
   UserAddingScreenInputMethodsController im_controller_;
 };
 
 void UserAddingScreenImpl::Start() {
   CHECK(!IsRunning());
   gfx::Rect screen_bounds(chromeos::CalculateScreenBounds(gfx::Size()));
@@ skipping 62 matching lines @@
 
 UserAddingScreen::UserAddingScreen() {}
 UserAddingScreen::~UserAddingScreen() {}
 
 UserAddingScreen* UserAddingScreen::Get() {
   return UserAddingScreenImpl::GetInstance();
 }
 
 }  // namespace chromeos