Use a direct include of strings headers in x/.

chrome/browser/ui/views/cookie_info_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_COOKIE_INFO_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_COOKIE_INFO_VIEW_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "ui/base/models/combobox_model.h"
 #include "ui/views/controls/combobox/combobox_listener.h"
 #include "ui/views/view.h"
 
 namespace views {
 class GridLayout;
 class Label;
 class Textfield;
 }
 
@@ skipping 88 matching lines @@
   // CookiesPromptView (alert before cookie is set), in all other cases we
   // don't let user directly change cookie setting.
   bool editable_expiration_date_;
 
   CookieInfoViewDelegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(CookieInfoView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_COOKIE_INFO_VIEW_H_