diff -r 000000000000 -r 4f2f89ce4247 WebCore/rendering/RenderPart.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderPart.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 2000 Simon Hausmann <hausmann@kde.org>
+ * Copyright (C) 2006, 2009 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 RenderPart_h
+#define RenderPart_h
+
+#include "RenderWidget.h"
+
+namespace WebCore {
+
+// Renderer for frames via RenderFrameBase, and plug-ins via RenderEmbeddedObject.
+class RenderPart : public RenderWidget {
+public:
+    RenderPart(Element*);
+    virtual ~RenderPart();
+
+    virtual void setWidget(PassRefPtr<Widget>);
+    virtual void viewCleared();
+
+private:
+    virtual bool isRenderPart() const { return true; }
+    virtual const char* renderName() const { return "RenderPart"; }
+};
+
+inline RenderPart* toRenderPart(RenderObject* object)
+{
+    ASSERT(!object || object->isRenderPart());
+    return static_cast<RenderPart*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderPart(const RenderPart*);
+
+}
+
+#endif