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

chrome/browser/chromeos/login/enrollment/auto_enrollment_check_screen.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 CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_AUTO_ENROLLMENT_CHECK_SCREEN_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_AUTO_ENROLLMENT_CHECK_SCREEN_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 14 matching lines @@
 // keeping track of current auto-enrollment state and displaying and updating
 // the error screen upon failures. Similar to a screen controller, but it
 // doesn't actually drive a dedicated screen.
 class AutoEnrollmentCheckScreen
     : public AutoEnrollmentCheckScreenActor::Delegate,
       public BaseScreen,
       public NetworkPortalDetector::Observer {
  public:
   AutoEnrollmentCheckScreen(BaseScreenDelegate* base_screen_delegate,
                             AutoEnrollmentCheckScreenActor* actor);
-  virtual ~AutoEnrollmentCheckScreen();
+  ~AutoEnrollmentCheckScreen() override;
 
   static AutoEnrollmentCheckScreen* Get(ScreenManager* manager);
 
   // Clears the cached state causing the forced enrollment check to be retried.
   void ClearState();
 
   void set_auto_enrollment_controller(
       AutoEnrollmentController* auto_enrollment_controller) {
     auto_enrollment_controller_ = auto_enrollment_controller;
   }
 
   // BaseScreen implementation:
-  virtual void PrepareToShow() override;
-  virtual void Show() override;
-  virtual void Hide() override;
-  virtual std::string GetName() const override;
+  void PrepareToShow() override;
+  void Show() override;
+  void Hide() override;
+  std::string GetName() const override;
 
   // AutoEnrollmentCheckScreenActor::Delegate implementation:
-  virtual void OnActorDestroyed(AutoEnrollmentCheckScreenActor* actor) override;
+  void OnActorDestroyed(AutoEnrollmentCheckScreenActor* actor) override;
 
   // NetworkPortalDetector::Observer implementation:
-  virtual void OnPortalDetectionCompleted(
+  void OnPortalDetectionCompleted(
       const NetworkState* network,
       const NetworkPortalDetector::CaptivePortalState& state) override;
 
  private:
   // Handles update notifications regarding the auto-enrollment check.
   void OnAutoEnrollmentCheckProgressed(policy::AutoEnrollmentState state);
 
   // Handles a state update, updating the UI and saving the state.
   void UpdateState();
 
@@ skipping 30 matching lines @@
   scoped_ptr<ErrorScreensHistogramHelper> histogram_helper_;
 
   base::WeakPtrFactory<AutoEnrollmentCheckScreen> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AutoEnrollmentCheckScreen);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_ENROLLMENT_AUTO_ENROLLMENT_CHECK_SCREEN_H_