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

chrome/browser/extensions/api/mdns/mdns_api.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_API_MDNS_MDNS_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_MDNS_MDNS_API_H_
 
 #include <set>
 #include <string>
 
@@ skipping 13 matching lines @@
 
 // MDnsAPI is instantiated with the profile and will listen for extensions that
 // register listeners for the chrome.mdns extension API. It will use a registry
 // class to start the mDNS listener process (if necessary) and observe new
 // service events to dispatch them to registered extensions.
 class MDnsAPI : public BrowserContextKeyedAPI,
                 public EventRouter::Observer,
                 public DnsSdRegistry::DnsSdObserver {
  public:
   explicit MDnsAPI(content::BrowserContext* context);
-  virtual ~MDnsAPI();
+  ~MDnsAPI() override;
 
   static MDnsAPI* Get(content::BrowserContext* context);
 
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<MDnsAPI>* GetFactoryInstance();
 
   // Used to mock out the DnsSdRegistry for testing.
   void SetDnsSdRegistryForTesting(scoped_ptr<DnsSdRegistry> registry);
 
  protected:
   // Retrieve an instance of the registry. Lazily created when needed.
   virtual DnsSdRegistry* dns_sd_registry();
 
  private:
   friend class BrowserContextKeyedAPIFactory<MDnsAPI>;
 
   // EventRouter::Observer:
-  virtual void OnListenerAdded(const EventListenerInfo& details) override;
-  virtual void OnListenerRemoved(const EventListenerInfo& details) override;
+  void OnListenerAdded(const EventListenerInfo& details) override;
+  void OnListenerRemoved(const EventListenerInfo& details) override;
 
   // DnsSdRegistry::Observer
-  virtual void OnDnsSdEvent(
-      const std::string& service_type,
-      const DnsSdRegistry::DnsSdServiceList& services) override;
+  void OnDnsSdEvent(const std::string& service_type,
+                    const DnsSdRegistry::DnsSdServiceList& services) override;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() {
     return "MDnsAPI";
   }
 
   static const bool kServiceIsCreatedWithBrowserContext = true;
   static const bool kServiceIsNULLWhileTesting = true;
 
   // Update the current list of service types and update the registry.
   void UpdateMDnsListeners(const EventListenerInfo& details);
 
   // Ensure methods are only called on UI thread.
   base::ThreadChecker thread_checker_;
   content::BrowserContext* const browser_context_;
   // Lazily created on first access and destroyed with this API class.
   scoped_ptr<DnsSdRegistry> dns_sd_registry_;
   // Current set of service types registered with the registry.
   std::set<std::string> service_types_;
 
   DISALLOW_COPY_AND_ASSIGN(MDnsAPI);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_MDNS_MDNS_API_H_