1 files changed, 20 insertions, 4 deletions
diff --git a/WebCore/rendering/RenderSVGRoot.h b/WebCore/rendering/RenderSVGRoot.h
index 50866d2..08c3058 100644
--- a/WebCore/rendering/RenderSVGRoot.h
+++ b/WebCore/rendering/RenderSVGRoot.h
@@ -2,6 +2,7 @@
     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005, 2007 Rob Buis <buis@kde.org>
     Copyright (C) 2009 Google, Inc.  All rights reserved.
+    Copyright (C) 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
@@ -35,13 +36,14 @@ class TransformationMatrix;
 class RenderSVGRoot : public RenderBox, SVGRenderBase {
 public:
     RenderSVGRoot(SVGStyledElement*);
-    ~RenderSVGRoot();
 
-    virtual RenderObjectChildList* virtualChildren() { return children(); }
-    virtual const RenderObjectChildList* virtualChildren() const { return children(); }
     const RenderObjectChildList* children() const { return &m_children; }
     RenderObjectChildList* children() { return &m_children; }
 
+private:
+    virtual RenderObjectChildList* virtualChildren() { return children(); }
+    virtual const RenderObjectChildList* virtualChildren() const { return children(); }
+
     virtual bool isSVGRoot() const { return true; }
     virtual const char* renderName() const { return "RenderSVGRoot"; }
 
@@ -70,7 +72,6 @@ public:
 
     virtual void mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool useTransforms, bool fixed, TransformState&) const;
 
-private:
     void calcViewport();
     const FloatSize& viewportSize() const;
 
@@ -85,6 +86,21 @@ private:
     FloatSize m_viewportSize;
 };
 
+inline RenderSVGRoot* toRenderSVGRoot(RenderObject* object)
+{ 
+    ASSERT(!object || object->isSVGRoot());
+    return static_cast<RenderSVGRoot*>(object);
+}
+
+inline const RenderSVGRoot* toRenderSVGRoot(const RenderObject* object)
+{ 
+    ASSERT(!object || object->isSVGRoot());
+    return static_cast<const RenderSVGRoot*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderSVGRoot(const RenderSVGRoot*);
+
 } // namespace WebCore
 
 #endif // ENABLE(SVG)