Revert of Convert remaining RenderSVG* nodes to RenderObject::isChildAllowed

Source/core/svg/SVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  *
  * 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
@@ skipping 932 matching lines @@
     // The outermost SVGSVGElement SVGLoad event is fired through Document::dispatchWindowLoadEvent.
     if (isOutermostSVGSVGElement())
         return;
 
     // finishParsingChildren() is called when the close tag is reached for an element (e.g. </svg>)
     // we send SVGLoad events here if we can, otherwise they'll be sent when any required loads finish
     if (isSVGSVGElement())
         sendSVGLoadEventIfPossible();
 }
 
+bool SVGElement::childShouldCreateRenderer(const Node& child) const
+{
+    if (child.hasTagName(SVGNames::textPathTag)
+#if ENABLE(SVG_FONTS)
+        || child.hasTagName(SVGNames::altGlyphTag)
+#endif
+        || child.hasTagName(SVGNames::tspanTag))
+        return false;
+    return child.isSVGElement();
+}
+
 void SVGElement::attributeChanged(const QualifiedName& name, const AtomicString& newValue, AttributeModificationReason)
 {
     Element::attributeChanged(name, newValue);
 
     if (isIdAttributeName(name))
         document().accessSVGExtensions()->rebuildAllElementReferencesForTarget(this);
 
     // Changes to the style attribute are processed lazily (see Element::getAttribute() and related methods),
     // so we don't want changes to the style attribute to result in extra work here.
     if (name != HTMLNames::styleAttr)
@@ skipping 226 matching lines @@
         animatableAttributes.add(SVGNames::zAttr);
     }
 
     if (name == classAttr)
         return true;
 
     return animatableAttributes.contains(name);
 }
 #endif
 }