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

chrome/browser/chromeos/login/merge_session_throttle.cc

 // Copyright (c) 2013 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/login/merge_session_throttle.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "base/metrics/histogram.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "chrome/browser/chromeos/login/login_utils.h"
 #include "chrome/browser/google/google_util.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_controller.h"
 #include "content/public/browser/web_contents.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_util.h"
@@ skipping 72 matching lines @@
 
 bool MergeSessionThrottle::ShouldShowMergeSessionPage(const GURL& url) const {
   // If we are loading google properties while merge session is in progress,
   // we will show delayed loading page instead.
   return !net::NetworkChangeNotifier::IsOffline() &&
          chromeos::UserManager::Get()->GetMergeSessionState() ==
              chromeos::UserManager::MERGE_STATUS_IN_PROCESS &&
          google_util::IsGoogleHostname(url.host(),
                                        google_util::ALLOW_SUBDOMAIN);
 }