Use a direct include of strings headers in webkit/, part 1.

webkit/browser/dom_storage/dom_storage_area.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 WEBKIT_BROWSER_DOM_STORAGE_DOM_STORAGE_AREA_H_
 #define WEBKIT_BROWSER_DOM_STORAGE_DOM_STORAGE_AREA_H_
 
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/nullable_string16.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/common/dom_storage/dom_storage_types.h"
 #include "webkit/storage/webkit_storage_export.h"
 
 namespace dom_storage {
 
 class DomStorageDatabaseAdapter;
 class DomStorageMap;
 class DomStorageTaskRunner;
 class SessionStorageDatabase;
@@ skipping 105 matching lines @@
   scoped_refptr<SessionStorageDatabase> session_storage_backing_;
   bool is_initial_import_done_;
   bool is_shutdown_;
   scoped_ptr<CommitBatch> commit_batch_;
   int commit_batches_in_flight_;
 };
 
 }  // namespace dom_storage
 
 #endif  // WEBKIT_BROWSER_DOM_STORAGE_DOM_STORAGE_AREA_H_