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diff --git a/webkit/glue/webhistoryitem_impl.h b/webkit/glue/webhistoryitem_impl.h
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+++ b/webkit/glue/webhistoryitem_impl.h
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+// Copyright (c) 2006-2008 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_GLUE_WEBHISTORYITEM_IMPL_H_
+#define WEBKIT_GLUE_WEBHISTORYITEM_IMPL_H_
+
+#include "webkit/glue/webhistoryitem.h"
+#include "googleurl/src/gurl.h"
+
+#include "RefPtr.h"
+
+namespace WebCore {
+  class HistoryItem;
+}
+
+class WebHistoryItemImpl : public WebHistoryItem {
+ public:
+  WebHistoryItemImpl(const GURL& url,
+                     const std::wstring& title,
+                     const std::string& history_state,
+                     WebRequest::ExtraData* extra_data);
+  virtual ~WebHistoryItemImpl();
+
+  // WebHistoryItem
+  virtual const GURL& GetURL() const;
+  virtual const std::wstring& GetTitle() const;
+  virtual const std::string& GetHistoryState() const;
+  virtual WebRequest::ExtraData* GetExtraData() const;
+
+  // WebHistoryItemImpl
+  // Returns a WebCore::HistoryItem based on the history_state.  This is
+  // lazily-created and cached.
+  WebCore::HistoryItem* GetHistoryItem() const;
+
+ protected:
+  GURL url_;
+  std::wstring title_;
+  std::string history_state_;
+  mutable RefPtr<WebCore::HistoryItem> history_item_;
+  scoped_refptr<WebRequest::ExtraData> extra_data_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(WebHistoryItemImpl);
+};
+
+#endif  // #ifndef WEBKIT_GLUE_WEBHISTORYITEM_IMPL_H_