[svg2] Make 'x' and 'y' presentation attributes

Source/core/svg/SVGAnimatedTypeAnimator.cpp

 /*
  * Copyright (C) Research In Motion Limited 2011-2012. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. 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
  * 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 170 matching lines @@
 PassRefPtrWillBeRawPtr<SVGPropertyBase> SVGAnimatedTypeAnimator::startAnimValAnimation(const SVGElementInstances& list)
 {
     ASSERT(isAnimatingSVGDom());
     SVGElement::InstanceUpdateBlocker blocker(m_contextElement);
 
     return resetAnimation(list);
 }
 
 void SVGAnimatedTypeAnimator::stopAnimValAnimation(const SVGElementInstances& list)
 {
-    ASSERT(isAnimatingSVGDom());
+    if (!isAnimatingSVGDom())
+        return;
+
     SVGElement::InstanceUpdateBlocker blocker(m_contextElement);
 
     for (SVGElement* elementInstance : list) {
         RefPtrWillBeRawPtr<SVGAnimatedPropertyBase> animatedProperty = elementInstance->propertyFromAttribute(m_animatedProperty->attributeName());
         if (animatedProperty)
             animatedProperty->animationEnded();
     }
 }
 
 PassRefPtrWillBeRawPtr<SVGPropertyBase> SVGAnimatedTypeAnimator::resetAnimValToBaseVal(const SVGElementInstances& list)
@@ skipping 48 matching lines @@
 }
 
 void SVGAnimatedTypeAnimator::trace(Visitor* visitor)
 {
     visitor->trace(m_animationElement);
     visitor->trace(m_contextElement);
     visitor->trace(m_animatedProperty);
 }
 
 }