Use a direct include of strings headers in chrome/browser/chromeos/.

chrome/browser/chromeos/drive/drive_app_registry.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/drive/drive_app_registry.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/files/file_path.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/drive/job_scheduler.h"
 #include "chrome/browser/google_apis/drive_api_parser.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace drive {
 
@@ skipping 243 matching lines @@
                          web_app->app_icons,
                          web_app->document_icons,
                          web_store_id,
                          UTF8ToUTF16(product_iter->second),   // app name.
                          web_app->object_type,
                          web_app->is_primary_selector)));
   }
 }
 
 }  // namespace drive