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

chrome/browser/extensions/api/webstore/webstore_api.h

 // Copyright 2014 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_WEBSTORE_WEBSTORE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_WEBSTORE_WEBSTORE_API_H_
 
 #include <list>
 #include <string>
 
@@ skipping 16 matching lines @@
 class Sender;
 }
 
 namespace extensions {
 class InstallTracker;
 
 class WebstoreAPI : public BrowserContextKeyedAPI,
                     public InstallObserver {
  public:
   explicit WebstoreAPI(content::BrowserContext* browser_context);
-  virtual ~WebstoreAPI();
+  ~WebstoreAPI() override;
 
   static WebstoreAPI* Get(content::BrowserContext* browser_context);
 
   // Called whenever an inline extension install is started. Examines
   // |listener_mask| to determine if a download progress or install
   // stage listener should be added.
   // |routing_id| refers to the id to which we send any return messages;
   // |ipc_sender| is the sender through which we send them (typically this
   // is the TabHelper which started the inline install).
   void OnInlineInstallStart(int routing_id,
@@ skipping 21 matching lines @@
   void SendInstallMessageIfObserved(const std::string& extension_id,
                                     api::webstore::InstallStage install_stage);
 
   // Removes listeners for the given |extension_id|-|routing_id| pair from
   // |listeners|.
   void RemoveListeners(int routing_id,
                        const std::string& extension_id,
                        ObservedInstallInfoList* listeners);
 
   // InstallObserver implementation.
-  virtual void OnBeginExtensionDownload(const std::string& extension_id)
-      override;
-  virtual void OnDownloadProgress(const std::string& extension_id,
-                                  int percent_downloaded) override;
-  virtual void OnBeginCrxInstall(const std::string& extension_id) override;
-  virtual void OnShutdown() override;
+  void OnBeginExtensionDownload(const std::string& extension_id) override;
+  void OnDownloadProgress(const std::string& extension_id,
+                          int percent_downloaded) override;
+  void OnBeginCrxInstall(const std::string& extension_id) override;
+  void OnShutdown() override;
 
   // BrowserContextKeyedService implementation.
-  virtual void Shutdown() override;
+  void Shutdown() override;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() { return "WebstoreAPI"; }
   static const bool kServiceIsNULLWhileTesting = true;
 
   ObservedInstallInfoList download_progress_listeners_;
   ObservedInstallInfoList install_stage_listeners_;
   content::BrowserContext* browser_context_;
   scoped_ptr<ScopedObserver<InstallTracker, InstallObserver> >
       install_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(WebstoreAPI);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_WEBSTORE_WEBSTORE_API_H_