Standardize usage of virtual/override/final specifiers.

chrome/browser/sync/sync_error_notifier_ash.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/sync/sync_error_notifier_ash.h"
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/system/system_notifier.h"
 #include "base/strings/string16.h"
@@ skipping 27 matching lines @@
 
 const char kProfileSyncNotificationId[] = "chrome://settings/sync/";
 
 // A simple notification delegate for the sync setup button.
 class SyncNotificationDelegate : public NotificationDelegate {
  public:
   SyncNotificationDelegate(const std::string& id,
                            Profile* profile);
 
   // NotificationDelegate:
-  virtual void Display() override;
-  virtual void Error() override;
-  virtual void Close(bool by_user) override;
-  virtual bool HasClickedListener() override;
-  virtual void Click() override;
-  virtual void ButtonClick(int button_index) override;
-  virtual std::string id() const override;
+  void Display() override;
+  void Error() override;
+  void Close(bool by_user) override;
+  bool HasClickedListener() override;
+  void Click() override;
+  void ButtonClick(int button_index) override;
+  std::string id() const override;
 
  protected:
-  virtual ~SyncNotificationDelegate();
+  ~SyncNotificationDelegate() override;
 
  private:
   void ShowSyncSetup();
 
   // Unique id of the notification.
   const std::string id_;
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncNotificationDelegate);
@@ skipping 126 matching lines @@
       ui::ResourceBundle::GetSharedInstance().GetImageNamed(
           IDR_NOTIFICATION_ALERT),
       blink::WebTextDirectionDefault,
       notifier_id,
       base::string16(),  // display_source
       base::ASCIIToUTF16(notification_id_),
       data,
       delegate);
   notification_ui_manager->Add(notification, profile_);
 }