Clean up unused grit header includes in chrome/

chrome/browser/chromeos/app_mode/kiosk_external_updater.cc

 // 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.
 
 #include "chrome/browser/chromeos/app_mode/kiosk_external_updater.h"
 
 #include "base/bind.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/version.h"
 #include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
 #include "chrome/browser/chromeos/ui/kiosk_external_update_notification.h"
-#include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/version_info/version_info.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/sandboxed_unpacker.h"
 #include "extensions/common/extension.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace chromeos {
 
@@ skipping 501 matching lines @@
   if (failed) {
     failed_app_msg = ui::ResourceBundle::GetSharedInstance().GetLocalizedString(
                          IDS_KIOSK_EXTERNAL_UPDATE_FAILED_UPDATED_APPS) +
                      base::ASCIIToUTF16("\n") + failed_apps;
     message = message + base::ASCIIToUTF16("\n") + failed_app_msg;
   }
   return message;
 }
 
 }  // namespace chromeos