[SVG] SVGAnimatedRect migration to new SVG property impl.

Source/core/svg/SVGTextContentElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
  *
  * 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,
@@ skipping 116 matching lines @@
     document().updateLayoutIgnorePendingStylesheets();
 
     if (charnum > getNumberOfChars()) {
         exceptionState.throwUninformativeAndGenericDOMException(IndexSizeError);
         return FloatPoint();
     }
 
     return SVGTextQuery(renderer()).endPositionOfCharacter(charnum);
 }
 
-SVGRect SVGTextContentElement::getExtentOfChar(unsigned charnum, ExceptionState& exceptionState)
+PassRefPtr<SVGRectTearOff> SVGTextContentElement::getExtentOfChar(unsigned charnum, ExceptionState& exceptionState)
 {
     document().updateLayoutIgnorePendingStylesheets();
 
     if (charnum > getNumberOfChars()) {
         exceptionState.throwUninformativeAndGenericDOMException(IndexSizeError);
-        return SVGRect();
+        return 0;
     }
 
-    return SVGTextQuery(renderer()).extentOfCharacter(charnum);
+    FloatRect rect = SVGTextQuery(renderer()).extentOfCharacter(charnum);
+    return SVGRectTearOff::create(SVGRect::create(rect), 0, PropertyIsNotAnimVal);
 }
 
 float SVGTextContentElement::getRotationOfChar(unsigned charnum, ExceptionState& exceptionState)
 {
     document().updateLayoutIgnorePendingStylesheets();
 
     if (charnum > getNumberOfChars()) {
         exceptionState.throwUninformativeAndGenericDOMException(IndexSizeError);
         return 0.0f;
     }
@@ skipping 119 matching lines @@
     SVGElement* element = toSVGElement(renderer->node());
     ASSERT(element);
 
     if (!element->isTextContent())
         return 0;
 
     return toSVGTextContentElement(element);
 }
 
 }