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

chrome/browser/extensions/api/preference/chrome_direct_setting.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_EXTENSIONS_API_PREFERENCE_CHROME_DIRECT_SETTING_H__
 #define CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_CHROME_DIRECT_SETTING_H__
 
 #include "base/lazy_instance.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
 
 class PrefService;
 
 namespace extensions {
 namespace chromedirectsetting {
 
 // Base class to host instance method helpers.
 class DirectSettingFunctionBase : public ChromeSyncExtensionFunction {
  protected:
   DirectSettingFunctionBase();
-  virtual ~DirectSettingFunctionBase();
+  ~DirectSettingFunctionBase() override;
 
   // Returns the user pref service.
   PrefService* GetPrefService();
 
   // Returns true if the caller is a component extension.
   bool IsCalledFromComponentExtension();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DirectSettingFunctionBase);
 };
 
 class GetDirectSettingFunction : public DirectSettingFunctionBase {
  public:
   DECLARE_EXTENSION_FUNCTION("types.private.ChromeDirectSetting.get",
                              TYPES_PRIVATE_CHROMEDIRECTSETTING_GET)
 
   GetDirectSettingFunction();
 
  protected:
   // ExtensionFunction:
-  virtual bool RunSync() override;
+  bool RunSync() override;
 
  private:
-  virtual ~GetDirectSettingFunction();
+  ~GetDirectSettingFunction() override;
   DISALLOW_COPY_AND_ASSIGN(GetDirectSettingFunction);
 };
 
 class SetDirectSettingFunction : public DirectSettingFunctionBase {
  public:
   DECLARE_EXTENSION_FUNCTION("types.private.ChromeDirectSetting.set",
                              TYPES_PRIVATE_CHROMEDIRECTSETTING_SET)
 
   SetDirectSettingFunction();
 
  protected:
   // ExtensionFunction:
-  virtual bool RunSync() override;
+  bool RunSync() override;
 
  private:
-  virtual ~SetDirectSettingFunction();
+  ~SetDirectSettingFunction() override;
   DISALLOW_COPY_AND_ASSIGN(SetDirectSettingFunction);
 };
 
 class ClearDirectSettingFunction : public DirectSettingFunctionBase {
  public:
   DECLARE_EXTENSION_FUNCTION("types.private.ChromeDirectSetting.clear",
                              TYPES_PRIVATE_CHROMEDIRECTSETTING_CLEAR)
 
   ClearDirectSettingFunction();
 
  protected:
   // ExtensionFunction:
-  virtual bool RunSync() override;
+  bool RunSync() override;
 
  private:
-  virtual ~ClearDirectSettingFunction();
+  ~ClearDirectSettingFunction() override;
   DISALLOW_COPY_AND_ASSIGN(ClearDirectSettingFunction);
 };
 
 }  // namespace chromedirectsetting
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_PREFERENCE_CHROME_DIRECT_SETTING_H__