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

chrome/browser/extensions/install_tracker.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_INSTALL_TRACKER_H_
 #define CHROME_BROWSER_EXTENSIONS_INSTALL_TRACKER_H_
 
 #include <map>
 
 #include "base/observer_list.h"
@@ skipping 14 matching lines @@
 
 class ExtensionPrefs;
 class ExtensionRegistry;
 
 class InstallTracker : public KeyedService,
                        public content::NotificationObserver,
                        public ExtensionRegistryObserver {
  public:
   InstallTracker(content::BrowserContext* browser_context,
                  extensions::ExtensionPrefs* prefs);
-  virtual ~InstallTracker();
+  ~InstallTracker() override;
 
   static InstallTracker* Get(content::BrowserContext* context);
 
   void AddObserver(InstallObserver* observer);
   void RemoveObserver(InstallObserver* observer);
 
   // If an install is currently in progress for |extension_id|, returns details
   // of the installation. This instance retains ownership of the returned
   // pointer. Returns NULL if the extension is not currently being installed.
   const ActiveInstallData* GetActiveInstall(
@@ skipping 15 matching lines @@
   void OnDownloadProgress(const std::string& extension_id,
                           int percent_downloaded);
   void OnBeginCrxInstall(const std::string& extension_id);
   void OnFinishCrxInstall(const std::string& extension_id, bool success);
   void OnInstallFailure(const std::string& extension_id);
 
   // NOTE(limasdf): For extension [un]load and [un]installed, use
   //                ExtensionRegistryObserver.
 
   // Overriddes for KeyedService.
-  virtual void Shutdown() override;
+  void Shutdown() override;
 
  private:
   void OnAppsReordered();
 
   // content::NotificationObserver implementation.
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) override;
+  void Observe(int type,
+               const content::NotificationSource& source,
+               const content::NotificationDetails& details) override;
 
   // ExtensionRegistryObserver implementation.
-  virtual void OnExtensionInstalled(content::BrowserContext* browser_context,
-                                    const Extension* extension,
-                                    bool is_update) override;
+  void OnExtensionInstalled(content::BrowserContext* browser_context,
+                            const Extension* extension,
+                            bool is_update) override;
 
   // Maps extension id to the details of an active install.
   typedef std::map<std::string, ActiveInstallData> ActiveInstallsMap;
   ActiveInstallsMap active_installs_;
 
   ObserverList<InstallObserver> observers_;
   content::NotificationRegistrar registrar_;
   PrefChangeRegistrar pref_change_registrar_;
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(InstallTracker);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_INSTALL_TRACKER_H_