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

chrome/browser/chromeos/net/network_portal_notification_controller.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/net/network_portal_notification_controller.h"
 
 #include "ash/shell.h"
 #include "ash/system/system_notifier.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "base/basictypes.h"
@@ skipping 45 matching lines @@
 }
 
 class NetworkPortalNotificationControllerDelegate
     : public message_center::NotificationDelegate {
  public:
   explicit NetworkPortalNotificationControllerDelegate(
       base::WeakPtr<NetworkPortalNotificationController> controller)
       : clicked_(false), controller_(controller) {}
 
   // Overridden from message_center::NotificationDelegate:
-  virtual void Display() override;
-  virtual void Close(bool by_user) override;
-  virtual void Click() override;
+  void Display() override;
+  void Close(bool by_user) override;
+  void Click() override;
 
  private:
-  virtual ~NetworkPortalNotificationControllerDelegate() {}
+  ~NetworkPortalNotificationControllerDelegate() override {}
 
   bool clicked_;
 
   base::WeakPtr<NetworkPortalNotificationController> controller_;
 
   DISALLOW_COPY_AND_ASSIGN(NetworkPortalNotificationControllerDelegate);
 };
 
 void NetworkPortalNotificationControllerDelegate::Display() {
   UMA_HISTOGRAM_ENUMERATION(
@@ skipping 132 matching lines @@
 
 void NetworkPortalNotificationController::OnDialogDestroyed(
     const NetworkPortalWebDialog* dialog) {
   if (dialog == dialog_) {
     dialog_ = nullptr;
     ProfileHelper::Get()->ClearSigninProfile(base::Closure());
   }
 }
 
 }  // namespace chromeos