Add OVERRIDE to chrome/service/.

chrome/service/cloud_print/job_status_updater.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_SERVICE_CLOUD_PRINT_JOB_STATUS_UPDATER_H_
 #define CHROME_SERVICE_CLOUD_PRINT_JOB_STATUS_UPDATER_H_
 #pragma once
 
 #include <string>
 
@@ skipping 31 matching lines @@
 
   // Checks the status of the local print job and sends an update.
   void UpdateStatus();
   void Stop();
 
   // CloudPrintURLFetcher::Delegate implementation.
   virtual CloudPrintURLFetcher::ResponseAction HandleJSONData(
       const content::URLFetcher* source,
       const GURL& url,
       base::DictionaryValue* json_data,
-      bool succeeded);
-  virtual CloudPrintURLFetcher::ResponseAction OnRequestAuthError();
-  virtual std::string GetAuthHeader();
+      bool succeeded) OVERRIDE;
+  virtual CloudPrintURLFetcher::ResponseAction OnRequestAuthError() OVERRIDE;
+  virtual std::string GetAuthHeader() OVERRIDE;
 
  private:
   std::string printer_name_;
   std::string job_id_;
   cloud_print::PlatformJobId local_job_id_;
   cloud_print::PrintJobDetails last_job_details_;
   scoped_refptr<CloudPrintURLFetcher> request_;
   GURL cloud_print_server_url_;
   scoped_refptr<cloud_print::PrintSystem> print_system_;
   Delegate* delegate_;
   // A flag that is set to true in Stop() and will ensure the next scheduled
   // task will do nothing.
   bool stopped_;
   DISALLOW_COPY_AND_ASSIGN(JobStatusUpdater);
 };
 
 // This typedef is to workaround the issue with certain versions of
 // Visual Studio where it gets confused between multiple Delegate
 // classes and gives a C2500 error. (I saw this error on the try bots -
 // the workaround was not needed for my machine).
 typedef JobStatusUpdater::Delegate JobStatusUpdaterDelegate;
 
 #endif  // CHROME_SERVICE_CLOUD_PRINT_JOB_STATUS_UPDATER_H_