Move nullable_string16.h to the string subdirectory.

webkit/renderer/dom_storage/dom_storage_proxy.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_RENDERER_DOM_STORAGE_CACHED_AREA_H_
 #define WEBKIT_RENDERER_DOM_STORAGE_CACHED_AREA_H_
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
-#include "base/nullable_string16.h"
+#include "base/strings/nullable_string16.h"
 #include "base/strings/string16.h"
 #include "googleurl/src/gurl.h"
 #include "webkit/common/dom_storage/dom_storage_types.h"
 
 namespace dom_storage {
 
 // Abstract interface for cached area, renderer to browser communications.
 class DomStorageProxy : public base::RefCounted<DomStorageProxy> {
  public:
   typedef base::Callback<void(bool)> CompletionCallback;
@@ skipping 13 matching lines @@
                          const GURL& page_url,
                          const CompletionCallback& callback) = 0;
  protected:
   friend class base::RefCounted<DomStorageProxy>;
   virtual ~DomStorageProxy() {}
 };
 
 }  // namespace dom_storage
 
 #endif  // WEBKIT_RENDERER_DOM_STORAGE_DOM_STORAGE_AREA_H_