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

chrome/browser/extensions/api/tab_capture/tab_capture_registry.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_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_
 #define CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_
 
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 50 matching lines @@
   // in the PENDING state.
   bool VerifyRequest(int render_process_id,
                      int render_frame_id,
                      const std::string& extension_id);
 
  private:
   friend class BrowserContextKeyedAPIFactory<TabCaptureRegistry>;
   class LiveRequest;
 
   explicit TabCaptureRegistry(content::BrowserContext* context);
-  virtual ~TabCaptureRegistry();
+  ~TabCaptureRegistry() override;
 
   // Used by BrowserContextKeyedAPI.
   static const char* service_name() {
     return "TabCaptureRegistry";
   }
 
   static const bool kServiceIsCreatedWithBrowserContext = false;
   static const bool kServiceRedirectedInIncognito = true;
 
   // ExtensionRegistryObserver implementation.
-  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;
 
   // MediaCaptureDevicesDispatcher::Observer implementation.
-  virtual void OnRequestUpdate(
-      int original_target_render_process_id,
-      int original_target_render_frame_id,
-      content::MediaStreamType stream_type,
-      const content::MediaRequestState state) override;
+  void OnRequestUpdate(int original_target_render_process_id,
+                       int original_target_render_frame_id,
+                       content::MediaStreamType stream_type,
+                       const content::MediaRequestState state) override;
 
   // Send a StatusChanged event containing the current state of |request|.
   void DispatchStatusChangeEvent(const LiveRequest* request) const;
 
   // Look-up a LiveRequest associated with the given |target_contents| (or
   // the originally targetted RenderFrameHost), if any.
   LiveRequest* FindRequest(const content::WebContents* target_contents) const;
   LiveRequest* FindRequest(int original_target_render_process_id,
                            int original_target_render_frame_id) const;
 
   // Removes the |request| from |requests_|, thus causing its destruction.
   void KillRequest(LiveRequest* request);
 
   content::BrowserContext* const browser_context_;
   ScopedVector<LiveRequest> requests_;
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(TabCaptureRegistry);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TAB_CAPTURE_TAB_CAPTURE_REGISTRY_H_