FBTF: Remove "obviously" unneeded standard C++ library #includes.

chrome/browser/in_process_webkit/dom_storage_area.h

 // Copyright (c) 2010 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_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_
 #define CHROME_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_
 #pragma once
 
-#include <string>
-
 #include "base/hash_tables.h"
 #include "base/nullable_string16.h"
 #include "base/ref_counted.h"
 #include "base/scoped_ptr.h"
+#include "base/string16.h"
 #include "chrome/common/dom_storage_common.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebStorageArea.h"
 
 class DOMStorageDispatcherHost;
 class DOMStorageNamespace;
 class HostContentSettingsMap;
 
 // Only use on the WebKit thread.  DOMStorageNamespace manages our registration
 // with DOMStorageContext.
@@ skipping 57 matching lines @@
 struct hash<DOMStorageArea*> {
   std::size_t operator()(DOMStorageArea* const& p) const {
     return reinterpret_cast<std::size_t>(p);
   }
 };
 
 }  // namespace __gnu_cxx
 #endif
 
 #endif  // CHROME_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_