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

chrome/browser/chromeos/login/test/oobe_screen_waiter.h

 // Copyright 2013 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_LOGIN_TEST_OOBE_SCREEN_WAITER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_TEST_OOBE_SCREEN_WAITER_H_
 
 #include "base/basictypes.h"
 #include "chrome/browser/chromeos/login/ui/oobe_display.h"
 #include "chrome/browser/ui/webui/chromeos/login/oobe_ui.h"
 
 namespace content {
 class MessageLoopRunner;
 }
 
 namespace chromeos {
 
 // A waiter that blocks until the expected oobe screen is reached.
 class OobeScreenWaiter : public OobeUI::Observer {
  public:
   explicit OobeScreenWaiter(OobeDisplay::Screen expected_screen);
-  virtual ~OobeScreenWaiter();
+  ~OobeScreenWaiter() override;
 
   // Run message loop to wait for the expected_screen.
   void Wait();
 
   // Similar to Wait() but does not assert the current screen is
   // expected_screen on exit. Use this when there are multiple screen changes
   // during the wait and the screen to be waited is not the final one.
   void WaitNoAssertCurrentScreen();
 
   // OobeUI::Observer implementation:
-  virtual void OnCurrentScreenChanged(
-        OobeDisplay::Screen current_screen,
-        OobeDisplay::Screen new_screen) override;
+  void OnCurrentScreenChanged(OobeDisplay::Screen current_screen,
+                              OobeDisplay::Screen new_screen) override;
 
  private:
   OobeUI* GetOobeUI();
 
   bool waiting_for_screen_;
   OobeDisplay::Screen expected_screen_;
   scoped_refptr<content::MessageLoopRunner> runner_;
 
   DISALLOW_COPY_AND_ASSIGN(OobeScreenWaiter);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_TEST_OOBE_SCREEN_WAITER_H_