Add OVERRIDE to chrome/browser/chromeos/.

chrome/browser/chromeos/login/image_downloader.h

 // Copyright (c) 2011 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_CHROMEOS_LOGIN_IMAGE_DOWNLOADER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_IMAGE_DOWNLOADER_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/image_decoder.h"
 #include "content/public/common/url_fetcher_delegate.h"
 #include "googleurl/src/gurl.h"
 
 namespace chromeos {
 
 // Downloads the image, decodes it in a sandboxed process.
 // This objects deletes itself after OnURLFetchComplete.
 class ImageDownloader : public content::URLFetcherDelegate {
  public:
   // Starts downloading the picture. Optional auth_token could be passed.
   // Object is deleted as reference counted object.
   ImageDownloader(ImageDecoder::Delegate* delegate,
                   const GURL& image_url,
                   const std::string& auth_token);
   virtual ~ImageDownloader();
 
  private:
   // Overriden from content::URLFetcherDelegate:
-  virtual void OnURLFetchComplete(const content::URLFetcher* source);
+  virtual void OnURLFetchComplete(const content::URLFetcher* source) OVERRIDE;
 
   ImageDecoder::Delegate* delegate_;
   scoped_ptr<content::URLFetcher> image_fetcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageDownloader);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_IMAGE_DOWNLOADER_H_