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

chrome/browser/apps/drive/drive_app_converter.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_APPS_DRIVE_DRIVE_APP_CONVERTER_H_
 #define CHROME_BROWSER_APPS_DRIVE_DRIVE_APP_CONVERTER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 14 matching lines @@
 // DriveAppConverter creates and installs a local URL app for the given
 // DriveAppInfo into the given profile.
 class DriveAppConverter : public extensions::InstallObserver {
  public:
   typedef base::Callback<void(const DriveAppConverter*, bool success)>
       FinishedCallback;
 
   DriveAppConverter(Profile* profile,
                     const drive::DriveAppInfo& drive_app_info,
                     const FinishedCallback& finished_callback);
-  virtual ~DriveAppConverter();
+  ~DriveAppConverter() override;
 
   void Start();
   bool IsStarted() const;
 
   bool IsInstalling(const std::string& app_id) const;
 
   const drive::DriveAppInfo& drive_app_info() const { return drive_app_info_; }
   const extensions::Extension* extension() const { return extension_; }
   bool is_new_install() const { return is_new_install_; }
 
  private:
   class IconFetcher;
 
   // Callbacks from IconFetcher.
   void OnIconFetchComplete(const IconFetcher* fetcher);
 
   void StartInstall();
   void PostInstallCleanUp();
 
   // extensions::InstallObserver:
-  virtual void OnFinishCrxInstall(const std::string& extension_id,
-                                  bool success) override;
+  void OnFinishCrxInstall(const std::string& extension_id,
+                          bool success) override;
 
   Profile* profile_;
   const drive::DriveAppInfo drive_app_info_;
 
   WebApplicationInfo web_app_;
   const extensions::Extension* extension_;
   bool is_new_install_;
 
   ScopedVector<IconFetcher> fetchers_;
   scoped_refptr<extensions::CrxInstaller> crx_installer_;
 
   FinishedCallback finished_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(DriveAppConverter);
 };
 
 #endif  // CHROME_BROWSER_APPS_DRIVE_DRIVE_APP_CONVERTER_H_