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

chrome/browser/chromeos/login/language_list.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_LANGUAGE_LIST_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_LANGUAGE_LIST_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 
 namespace chromeos {
 
 // LanguageList is used to enumerate native names corresponding to the
 // language code (e.g. English (United States) for en-US).
 class LanguageList {
  public:
   LanguageList();
   ~LanguageList();
 
@@ skipping 32 matching lines @@
 
   // A map of some extra data (LocaleData) keyed off the name of the locale.
   LocaleDataMap native_names_;
 
   DISALLOW_COPY_AND_ASSIGN(LanguageList);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LANGUAGE_LIST_H_