Convert SVG <text> and descendants to use RenderObject::isChildAllowed

Source/core/rendering/svg/RenderSVGTSpan.h

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2009 Google Inc.
  *
  * 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 10 matching lines @@
 
 #ifndef RenderSVGTSpan_h
 #define RenderSVGTSpan_h
 
 #include "core/rendering/svg/RenderSVGInline.h"
 
 namespace WebCore {
 class RenderSVGTSpan FINAL : public RenderSVGInline {
 public:
     explicit RenderSVGTSpan(Element*);
+
+    virtual bool isChildAllowed(RenderObject* child, RenderStyle*) const OVERRIDE;
+
     virtual const char* renderName() const OVERRIDE { return "RenderSVGTSpan"; }
 };
 }
 
 #endif // !RenderSVGTSpan_h