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

chrome/browser/extensions/api/alarms/alarm_manager.h

 // Copyright (c) 2012 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_ALARMS_ALARM_MANAGER_H__
 #define CHROME_BROWSER_EXTENSIONS_API_ALARMS_ALARM_MANAGER_H__
 
 #include <map>
 #include <queue>
 #include <string>
@@ skipping 50 matching lines @@
 
   class Delegate {
    public:
     virtual ~Delegate() {}
     // Called when an alarm fires.
     virtual void OnAlarm(const std::string& extension_id,
                          const Alarm& alarm) = 0;
   };
 
   explicit AlarmManager(content::BrowserContext* context);
-  virtual ~AlarmManager();
+  ~AlarmManager() override;
 
   // Override the default delegate. Callee assumes onwership. Used for testing.
   void set_delegate(Delegate* delegate) { delegate_.reset(delegate); }
 
   typedef base::Callback<void()> AddAlarmCallback;
   // Adds |alarm| for the given extension, and starts the timer. Invokes
   // |callback| when done.
   void AddAlarm(const std::string& extension_id,
                 const Alarm& alarm,
                 const AddAlarmCallback& callback);
@@ skipping 113 matching lines @@
 
   // Polls the alarms, running any that have elapsed. After running them and
   // rescheduling repeating alarms, schedule the next poll.
   void PollAlarms();
 
   // Executes |action| for given extension, making sure that the extension's
   // alarm data has been synced from the storage.
   void RunWhenReady(const std::string& extension_id, const ReadyAction& action);
 
   // ExtensionRegistryObserver implementation.
-  virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
-                                 const Extension* extension) override;
-  virtual void OnExtensionUninstalled(
-      content::BrowserContext* browser_context,
-      const Extension* extension,
-      extensions::UninstallReason reason) override;
+  void OnExtensionLoaded(content::BrowserContext* browser_context,
+                         const Extension* extension) override;
+  void OnExtensionUninstalled(content::BrowserContext* browser_context,
+                              const Extension* extension,
+                              extensions::UninstallReason reason) override;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() {
     return "AlarmManager";
   }
   static const bool kServiceHasOwnInstanceInIncognito = true;
 
   content::BrowserContext* const browser_context_;
   scoped_ptr<base::Clock> clock_;
   scoped_ptr<Delegate> delegate_;
@@ skipping 18 matching lines @@
 
   // Next poll's time.
   base::Time next_poll_time_;
 
   DISALLOW_COPY_AND_ASSIGN(AlarmManager);
 };
 
 }  //  namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_ALARMS_ALARM_MANAGER_H__