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

chrome/browser/chromeos/policy/device_local_account_browsertest.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 <map>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/stl_util.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/login/existing_user_controller.h"
 #include "chrome/browser/chromeos/login/login_display_host.h"
 #include "chrome/browser/chromeos/login/login_display_host_impl.h"
 #include "chrome/browser/chromeos/login/user.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/chromeos/policy/device_local_account.h"
 #include "chrome/browser/chromeos/policy/device_policy_builder.h"
 #include "chrome/browser/chromeos/policy/enterprise_install_attributes.h"
@@ skipping 363 matching lines @@
 
   TabStripModel* tabs = browser->tab_strip_model();
   ASSERT_TRUE(tabs);
   int expected_tab_count = static_cast<int>(arraysize(kStartupURLs));
   EXPECT_EQ(expected_tab_count, tabs->count());
   for (int i = 0; i < expected_tab_count && i < tabs->count(); ++i)
     EXPECT_EQ(GURL(kStartupURLs[i]), tabs->GetWebContentsAt(i)->GetURL());
 }
 
 }  // namespace policy