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

chrome/browser/extensions/api/messaging/message_service.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_MESSAGING_MESSAGE_SERVICE_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MESSAGING_MESSAGE_SERVICE_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 101 matching lines @@
 
   static PolicyPermission IsNativeMessagingHostAllowed(
       const PrefService* pref_service,
       const std::string& native_host_name);
 
   // Allocates a pair of port ids.
   // NOTE: this can be called from any thread.
   static void AllocatePortIdPair(int* port1, int* port2);
 
   explicit MessageService(content::BrowserContext* context);
-  virtual ~MessageService();
+  ~MessageService() override;
 
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<MessageService>* GetFactoryInstance();
 
   // Convenience method to get the MessageService for a browser context.
   static MessageService* Get(content::BrowserContext* context);
 
   // Given an extension's ID, opens a channel between the given renderer "port"
   // and every listening context owned by that extension. |channel_name| is
   // an optional identifier for use by extension developers.
@@ skipping 56 matching lines @@
   void CloseChannelImpl(MessageChannelMap::iterator channel_iter,
                         int port_id,
                         const std::string& error_message,
                         bool notify_other_port);
 
   // Have MessageService take ownership of |channel|, and remove any pending
   // channels with the same id.
   void AddChannel(MessageChannel* channel, int receiver_port_id);
 
   // 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;
 
   // A process that might be in our list of channels has closed.
   void OnProcessClosed(content::RenderProcessHost* process);
 
   void GotChannelID(scoped_ptr<OpenChannelParams> params,
                     const std::string& tls_channel_id);
 
   // Enqueues a message on a pending channel.
   void EnqueuePendingMessage(int port_id, int channel_id,
                              const Message& message);
@@ skipping 59 matching lines @@
   LazyBackgroundTaskQueue* lazy_background_task_queue_;
 
   base::WeakPtrFactory<MessageService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageService);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MESSAGING_MESSAGE_SERVICE_H_