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diff --git a/Source/WebCore/html/HTMLFrameOwnerElement.h b/Source/WebCore/html/HTMLFrameOwnerElement.h
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+++ b/Source/WebCore/html/HTMLFrameOwnerElement.h
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+/*
+ * Copyright (C) 2006, 2007, 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 HTMLFrameOwnerElement_h
+#define HTMLFrameOwnerElement_h
+
+#include "FrameLoaderTypes.h"
+#include "HTMLElement.h"
+
+namespace WebCore {
+
+class DOMWindow;
+class Frame;
+class RenderPart;
+
+#if ENABLE(SVG)
+class SVGDocument;
+#endif
+
+class HTMLFrameOwnerElement : public HTMLElement {
+public:
+    virtual ~HTMLFrameOwnerElement();
+
+    Frame* contentFrame() const { return m_contentFrame; }
+    DOMWindow* contentWindow() const;
+    Document* contentDocument() const;
+
+    // Most subclasses use RenderPart (either RenderEmbeddedObject or RenderIFrame)
+    // except for HTMLObjectElement and HTMLEmbedElement which may return any
+    // RenderObject when using fallback content.
+    RenderPart* renderPart() const;
+
+#if ENABLE(SVG)
+    SVGDocument* getSVGDocument(ExceptionCode&) const;
+#endif
+
+    virtual ScrollbarMode scrollingMode() const { return ScrollbarAuto; }
+
+    SandboxFlags sandboxFlags() const { return m_sandboxFlags; }
+
+protected:
+    HTMLFrameOwnerElement(const QualifiedName& tagName, Document*);
+
+    void setSandboxFlags(SandboxFlags);
+
+    virtual void willRemove();
+
+private:
+    friend class Frame;
+
+    virtual bool isFrameOwnerElement() const { return true; }
+    virtual bool isKeyboardFocusable(KeyboardEvent*) const { return m_contentFrame; }
+
+    Frame* m_contentFrame;
+    SandboxFlags m_sandboxFlags;
+};
+
+} // namespace WebCore
+
+#endif // HTMLFrameOwnerElement_h