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

chrome/browser/extensions/api/streams_private/streams_private_api.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_STREAMS_PRIVATE_STREAMS_PRIVATE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_STREAMS_PRIVATE_STREAMS_PRIVATE_API_H_
 
 #include <map>
 #include <string>
 
@@ skipping 11 matching lines @@
 namespace extensions {
 class ExtensionRegistry;
 
 class StreamsPrivateAPI : public BrowserContextKeyedAPI,
                           public ExtensionRegistryObserver {
  public:
   // Convenience method to get the StreamsPrivateAPI for a BrowserContext.
   static StreamsPrivateAPI* Get(content::BrowserContext* context);
 
   explicit StreamsPrivateAPI(content::BrowserContext* context);
-  virtual ~StreamsPrivateAPI();
+  ~StreamsPrivateAPI() override;
 
   // Send the onExecuteMimeTypeHandler event to |extension_id|.
   // |web_contents| is used to determine the tabId where the document is being
   // opened. The data for the document will be readable from |stream|, and
   // should be |expected_content_size| bytes long. If the viewer is being opened
   // in a BrowserPlugin, specify a non-empty |view_id| of the plugin.
   void ExecuteMimeTypeHandler(const std::string& extension_id,
                               content::WebContents* web_contents,
                               scoped_ptr<content::StreamInfo> stream,
                               const std::string& view_id,
                               int64 expected_content_size);
 
   void AbortStream(const std::string& extension_id,
                    const GURL& stream_url,
                    const base::Closure& callback);
 
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<StreamsPrivateAPI>* GetFactoryInstance();
 
  private:
   friend class BrowserContextKeyedAPIFactory<StreamsPrivateAPI>;
   typedef std::map<std::string,
                    std::map<GURL,
                             linked_ptr<content::StreamHandle> > > StreamMap;
 
   // 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;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() {
     return "StreamsPrivateAPI";
   }
   static const bool kServiceIsNULLWhileTesting = true;
   static const bool kServiceRedirectedInIncognito = true;
 
   content::BrowserContext* const browser_context_;
   StreamMap streams_;
 
   // Listen to extension unloaded notifications.
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       extension_registry_observer_;
 
   base::WeakPtrFactory<StreamsPrivateAPI> weak_ptr_factory_;
 
 };
 
 class StreamsPrivateAbortFunction : public UIThreadExtensionFunction {
  public:
   StreamsPrivateAbortFunction();
   DECLARE_EXTENSION_FUNCTION("streamsPrivate.abort", STREAMSPRIVATE_ABORT)
 
  protected:
-  virtual ~StreamsPrivateAbortFunction() {}
+  ~StreamsPrivateAbortFunction() override {}
 
   // ExtensionFunction:
-  virtual ExtensionFunction::ResponseAction Run() override;
+  ExtensionFunction::ResponseAction Run() override;
 
  private:
   void OnClose();
 
   std::string stream_url_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_STREAMS_PRIVATE_STREAMS_PRIVATE_API_H_