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diff --git a/Source/WebCore/rendering/RenderWidget.h b/Source/WebCore/rendering/RenderWidget.h
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+++ b/Source/WebCore/rendering/RenderWidget.h
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+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2004, 2005, 2006, 2009, 2010 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef RenderWidget_h
+#define RenderWidget_h
+
+#include "OverlapTestRequestClient.h"
+#include "RenderReplaced.h"
+#include "Widget.h"
+
+namespace WebCore {
+
+class RenderWidget : public RenderReplaced, private OverlapTestRequestClient {
+public:
+    virtual ~RenderWidget();
+
+    Widget* widget() const { return m_widget.get(); }
+    virtual void setWidget(PassRefPtr<Widget>);
+
+    static RenderWidget* find(const Widget*);
+
+    void updateWidgetPosition();
+    void widgetPositionsUpdated();
+    IntRect windowClipRect() const;
+
+    void showSubstituteImage(PassRefPtr<Image>);
+
+    void notifyWidget(WidgetNotification);
+    
+    static void suspendWidgetHierarchyUpdates();
+    static void resumeWidgetHierarchyUpdates();
+
+    RenderArena* ref() { ++m_refCount; return renderArena(); }
+    void deref(RenderArena*);
+
+protected:
+    RenderWidget(Node*);
+
+    FrameView* frameView() const { return m_frameView; }
+
+    void clearWidget();
+
+    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
+    virtual void layout();
+    virtual void paint(PaintInfo&, int x, int y);
+
+private:
+    virtual bool isWidget() const { return true; }
+
+    virtual void destroy();
+    virtual void setSelectionState(SelectionState);
+    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);
+    virtual void setOverlapTestResult(bool);
+
+    bool setWidgetGeometry(const IntRect&, const IntSize&);
+
+    RefPtr<Widget> m_widget;
+    RefPtr<Image> m_substituteImage;
+    FrameView* m_frameView;
+    IntRect m_clipRect; // The rectangle needs to remain correct after scrolling, so it is stored in content view coordinates, and not clipped to window.
+    int m_refCount;
+};
+
+inline RenderWidget* toRenderWidget(RenderObject* object)
+{
+    ASSERT(!object || object->isWidget());
+    return static_cast<RenderWidget*>(object);
+}
+
+inline const RenderWidget* toRenderWidget(const RenderObject* object)
+{
+    ASSERT(!object || object->isWidget());
+    return static_cast<const RenderWidget*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderWidget(const RenderWidget*);
+
+} // namespace WebCore
+
+#endif // RenderWidget_h