Make <iframe> containing SVG behave as every other <iframe>

Source/core/rendering/RenderEmbeddedObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2008, 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.
@@ skipping 233 matching lines @@
     return false;
 }
 
 CompositingReasons RenderEmbeddedObject::additionalCompositingReasons(CompositingTriggerFlags triggers) const
 {
     if ((triggers & PluginTrigger) && requiresAcceleratedCompositing())
         return CompositingReasonPlugin;
     return CompositingReasonNone;
 }
 
+RenderBox* RenderEmbeddedObject::embeddedContentBox() const
+{
+    if (!node() || !widget() || !widget()->isFrameView())
+        return 0;
+    return toFrameView(widget())->embeddedContentBox();
 }
+
+}