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diff --git a/src/3rdparty/webkit/WebCore/bindings/js/JSDataGridDataSource.h b/src/3rdparty/webkit/WebCore/bindings/js/JSDataGridDataSource.h
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+/*
+ * Copyright (C) 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#ifndef JSDataGridDataSource_h
+#define JSDataGridDataSource_h
+
+#include "DataGridDataSource.h"
+#include <runtime/JSValue.h>
+#include <runtime/Protect.h>
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class Frame;
+class HTMLDataGridElement;
+
+class JSDataGridDataSource : public DataGridDataSource {
+public:
+    static PassRefPtr<JSDataGridDataSource> create(JSC::JSValue dataSource, Frame* frame)
+    {
+        return adoptRef(new JSDataGridDataSource(dataSource, frame));
+    }
+
+    virtual ~JSDataGridDataSource();
+
+    virtual bool isJSDataGridDataSource() const { return true; }
+    JSC::JSValue jsDataSource() const { return m_dataSource.get(); }
+
+    virtual void initialize(HTMLDataGridElement*);
+
+private:
+    JSDataGridDataSource(JSC::JSValue, Frame*);
+
+    JSC::ProtectedJSValue m_dataSource;
+    RefPtr<Frame> m_frame;
+};
+
+inline JSDataGridDataSource* asJSDataGridDataSource(DataGridDataSource* dataSource)
+{
+    ASSERT(dataSource->isJSDataGridDataSource());
+    return static_cast<JSDataGridDataSource*>(dataSource);
+}
+
+inline const JSDataGridDataSource* asJSDataGridDataSource(const DataGridDataSource* dataSource)
+{
+    ASSERT(dataSource->isJSDataGridDataSource());
+    return static_cast<const JSDataGridDataSource*>(dataSource);
+}
+
+} // namespace WebCore
+
+#endif // JSDataGridDataSource_h