Use isSVG*Element() helpers more in SVG code (Part 2)

Source/core/svg/SVGMPathElement.cpp

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 119 matching lines @@
         buildPendingResource();
         return;
     }
 
     ASSERT_NOT_REACHED();
 }
 
 SVGPathElement* SVGMPathElement::pathElement()
 {
     Element* target = targetElementFromIRIString(hrefString(), document());
-    if (target && target->hasTagName(SVGNames::pathTag))
-        return toSVGPathElement(target);
-    return 0;
+    return isSVGPathElement(target) ? toSVGPathElement(target) : 0;
 }
 
 void SVGMPathElement::targetPathChanged()
 {
     notifyParentOfPathChange(parentNode());
 }
 
 void SVGMPathElement::notifyParentOfPathChange(ContainerNode* parent)
 {
-    if (parent && parent->hasTagName(SVGNames::animateMotionTag))
+    if (isSVGAnimateMotionElement(parent))
         toSVGAnimateMotionElement(parent)->updateAnimationPath();
 }
 
 } // namespace WebCore