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

chrome/browser/extensions/api/content_settings/content_settings_service.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_EXTENSIONS_API_CONTENT_SETTINGS_CONTENT_SETTINGS_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_API_CONTENT_SETTINGS_CONTENT_SETTINGS_SERVICE_H_
 
 #include "base/memory/ref_counted.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/extension_prefs_observer.h"
 
 namespace extensions {
 
 class ContentSettingsStore;
 class ExtensionPrefs;
 
 // This service hosts a single ContentSettingsStore for the
 // chrome.contentSettings API.
 class ContentSettingsService : public BrowserContextKeyedAPI,
                                public ExtensionPrefsObserver {
  public:
   explicit ContentSettingsService(content::BrowserContext* context);
-  virtual ~ContentSettingsService();
+  ~ContentSettingsService() override;
 
   scoped_refptr<ContentSettingsStore> content_settings_store() const {
     return content_settings_store_;
   }
 
   // Convenience function to get the service for some browser context.
   static ContentSettingsService* Get(content::BrowserContext* context);
 
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<ContentSettingsService>*
       GetFactoryInstance();
 
   // ExtensionPrefsObserver implementation.
-  virtual void OnExtensionRegistered(const std::string& extension_id,
-                                     const base::Time& install_time,
-                                     bool is_enabled) override;
-  virtual void OnExtensionPrefsLoaded(const std::string& extension_id,
-                                      const ExtensionPrefs* prefs) override;
-  virtual void OnExtensionPrefsDeleted(const std::string& extension_id)
-      override;
-  virtual void OnExtensionStateChanged(const std::string& extension_id,
-                                       bool state) override;
+  void OnExtensionRegistered(const std::string& extension_id,
+                             const base::Time& install_time,
+                             bool is_enabled) override;
+  void OnExtensionPrefsLoaded(const std::string& extension_id,
+                              const ExtensionPrefs* prefs) override;
+  void OnExtensionPrefsDeleted(const std::string& extension_id) override;
+  void OnExtensionStateChanged(const std::string& extension_id,
+                               bool state) override;
 
  private:
   friend class BrowserContextKeyedAPIFactory<ContentSettingsService>;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() { return "ContentSettingsService"; }
 
   scoped_refptr<ContentSettingsStore> content_settings_store_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSettingsService);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_CONTENT_SETTINGS_CONTENT_SETTINGS_SERVICE_H_