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

chrome/browser/chromeos/system/timezone_settings.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/system/timezone_settings.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/chromeos/chromeos_version.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/observer_list.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 "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host.h"
 #include "third_party/icu/public/i18n/unicode/timezone.h"
 
 using content::BrowserThread;
 
 namespace {
@@ skipping 430 matching lines @@
 
 // static
 string16 TimezoneSettings::GetTimezoneID(const icu::TimeZone& timezone) {
   icu::UnicodeString id;
   timezone.getID(id);
   return string16(id.getBuffer(), id.length());
 }
 
 }  // namespace system
 }  // namespace chromeos