Iron out some kinks in SVG IDL files

Source/core/svg/SVGAnimationElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 240 matching lines @@
     return narrowPrecisionToFloat(simpleDuration().value());
 }
 
 void SVGAnimationElement::beginElement()
 {
     beginElementAt(0);
 }
 
 void SVGAnimationElement::beginElementAt(float offset)
 {
-    if (std::isnan(offset))
+    if (!std::isfinite(offset))
         return;
     SMILTime elapsed = this->elapsed();
     addBeginTime(elapsed, elapsed + offset, SMILTimeWithOrigin::ScriptOrigin);
 }
 
 void SVGAnimationElement::endElement()
 {
     endElementAt(0);
 }
 
 void SVGAnimationElement::endElementAt(float offset)
 {
-    if (std::isnan(offset))
+    if (!std::isfinite(offset))
         return;
     SMILTime elapsed = this->elapsed();
     addEndTime(elapsed, elapsed + offset, SMILTimeWithOrigin::ScriptOrigin);
 }
 
 void SVGAnimationElement::updateAnimationMode()
 {
     // http://www.w3.org/TR/2001/REC-smil-animation-20010904/#AnimFuncValues
     if (hasAttribute(SVGNames::valuesAttr))
         setAnimationMode(ValuesAnimation);
@@ skipping 424 matching lines @@
     SVGSMILElement::setAttributeName(attributeName);
     checkInvalidCSSAttributeType(targetElement());
 }
 
 void SVGAnimationElement::checkInvalidCSSAttributeType(SVGElement* target)
 {
     m_hasInvalidCSSAttributeType = target && hasValidAttributeName() && attributeType() == AttributeTypeCSS && !isTargetAttributeCSSProperty(target, attributeName());
 }
 
 }