Standardize usage of virtual/override/final in chrome/browser/ui/

chrome/browser/ui/webui/options/supervised_user_import_handler.h

Index: chrome/browser/ui/webui/options/supervised_user_import_handler.h
diff --git a/chrome/browser/ui/webui/options/supervised_user_import_handler.h b/chrome/browser/ui/webui/options/supervised_user_import_handler.h
index c6447a5068476a94d47bb5f9f34c509e726f6956..b2bb38316279dbe22fba7d4b2410aebaf0fff3bd 100644
--- a/chrome/browser/ui/webui/options/supervised_user_import_handler.h
+++ b/chrome/browser/ui/webui/options/supervised_user_import_handler.h
@@ -28,24 +28,23 @@ class SupervisedUserImportHandler : public OptionsPageUIHandler,
       CallbackList;
 
   SupervisedUserImportHandler();
-  virtual ~SupervisedUserImportHandler();
+  ~SupervisedUserImportHandler() override;
 
   // OptionsPageUIHandler implementation.
-  virtual void GetLocalizedValues(
-      base::DictionaryValue* localized_strings) override;
-  virtual void InitializeHandler() override;
+  void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
+  void InitializeHandler() override;
 
   // WebUIMessageHandler implementation.
-  virtual void RegisterMessages() override;
+  void RegisterMessages() override;
 
   // SupervisedUserSyncServiceObserver implementation.
-  virtual void OnSupervisedUserAcknowledged(
+  void OnSupervisedUserAcknowledged(
       const std::string& supervised_user_id) override {}
-  virtual void OnSupervisedUsersSyncingStopped() override {}
-  virtual void OnSupervisedUsersChanged() override;
+  void OnSupervisedUsersSyncingStopped() override {}
+  void OnSupervisedUsersChanged() override;
 
   // SigninErrorController::Observer implementation.
-  virtual void OnErrorChanged() override;
+  void OnErrorChanged() override;
 
  private:
   // Clears the cached list of supervised users and fetches the new list of