replace OVERRIDE and FINAL with override and final in chrome/browser/chromeos/

chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.cc

 // 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.
 
 #include "chrome/browser/chromeos/kiosk_mode/kiosk_mode_screensaver.h"
 
 #include "ash/screensaver/screensaver_view.h"
 #include "ash/shell.h"
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 52 matching lines @@
  public:
   ScreensaverUnpackerClient(const base::FilePath& crx_path,
                             const UnpackCallback& unpacker_callback)
       : crx_path_(crx_path),
         unpack_callback_(unpacker_callback) {}
 
   virtual void OnUnpackSuccess(const base::FilePath& temp_dir,
                                const base::FilePath& extension_root,
                                const base::DictionaryValue* original_manifest,
                                const Extension* extension,
-                               const SkBitmap& install_icon) OVERRIDE;
-  virtual void OnUnpackFailure(const base::string16& error) OVERRIDE;
+                               const SkBitmap& install_icon) override;
+  virtual void OnUnpackFailure(const base::string16& error) override;
 
  protected:
   virtual ~ScreensaverUnpackerClient() {}
 
  private:
   void LoadScreensaverExtension(
       const base::FilePath& extension_base_path,
       const base::FilePath& screensaver_extension_path);
 
   void NotifyAppPackOfDamagedFile();
@@ skipping 224 matching lines @@
 
   g_kiosk_mode_screensaver = new KioskModeScreensaver();
 }
 
 void ShutdownKioskModeScreensaver() {
   delete g_kiosk_mode_screensaver;
   g_kiosk_mode_screensaver = NULL;
 }
 
 }  // namespace chromeos