Standardize usage of virtual/override/final in extensions/

extensions/browser/lazy_background_task_queue.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 EXTENSIONS_BROWSER_LAZY_BACKGROUND_TASK_QUEUE_H_
 #define EXTENSIONS_BROWSER_LAZY_BACKGROUND_TASK_QUEUE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 20 matching lines @@
 // the page when the first task is queued.
 //
 // It is the consumer's responsibility to use this class when appropriate, i.e.
 // only with extensions that have not-yet-loaded lazy background pages.
 class LazyBackgroundTaskQueue : public content::NotificationObserver,
                                 public ExtensionRegistryObserver {
  public:
   typedef base::Callback<void(ExtensionHost*)> PendingTask;
 
   explicit LazyBackgroundTaskQueue(content::BrowserContext* browser_context);
-  virtual ~LazyBackgroundTaskQueue();
+  ~LazyBackgroundTaskQueue() override;
 
   // Returns the number of extensions having pending tasks.
   size_t extensions_with_pending_tasks() { return pending_tasks_.size(); }
 
   // Returns true if the task should be added to the queue (that is, if the
   // extension has a lazy background page that isn't ready yet). If the
   // extension has a lazy background page that is being suspended this method
   // cancels that suspension.
   bool ShouldEnqueueTask(content::BrowserContext* context,
                          const Extension* extension);
@@ skipping 13 matching lines @@
 
   // A map between a BrowserContext/extension_id pair and the queue of tasks
   // pending the load of its background page.
   typedef std::string ExtensionID;
   typedef std::pair<content::BrowserContext*, ExtensionID> PendingTasksKey;
   typedef std::vector<PendingTask> PendingTasksList;
   typedef std::map<PendingTasksKey,
                    linked_ptr<PendingTasksList> > PendingTasksMap;
 
   // content::NotificationObserver interface.
-  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 interface.
-  virtual void OnExtensionUnloaded(
-      content::BrowserContext* browser_context,
-      const Extension* extension,
-      UnloadedExtensionInfo::Reason reason) override;
+  void OnExtensionUnloaded(content::BrowserContext* browser_context,
+                           const Extension* extension,
+                           UnloadedExtensionInfo::Reason reason) override;
 
   // Called when a lazy background page has finished loading, or has failed to
   // load (host is NULL in that case). All enqueued tasks are run in order.
   void ProcessPendingTasks(
       ExtensionHost* host,
       content::BrowserContext* context,
       const Extension* extension);
 
   content::BrowserContext* browser_context_;
   content::NotificationRegistrar registrar_;
   PendingTasksMap pending_tasks_;
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_LAZY_BACKGROUND_TASK_QUEUE_H_