Clear need for animation style for forced styleForElement.

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index 2607f8068404cfcac097b193fdb630258c627a04..5400a9452dc72f3a0eaab16cec8a9946f77ec3f5 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -1727,14 +1727,20 @@ void Element::pseudoStateChanged(CSSSelector::PseudoType pseudo)
         elementShadow->distributedNodePseudoStateChanged(pseudo);
 }
 
-void Element::setAnimationStyleChange(bool animationStyleChange)
+void Element::setAnimationStyleChange(bool animationStyleChange) const
 {
     if (animationStyleChange && document().inStyleRecalc())
         return;
-    if (ElementAnimations* elementAnimations = elementRareData()->elementAnimations())
+    if (ElementAnimations* elementAnimations = this->elementAnimations())
         elementAnimations->setAnimationStyleChange(animationStyleChange);
 }
 
+void Element::clearAnimationStyleChange() const
+{
+    if (ElementAnimations* elementAnimations = this->elementAnimations())
+        elementAnimations->setAnimationStyleChange(false);
+}
+
 void Element::setNeedsAnimationStyleRecalc()
 {
     if (styleChangeType() != NoStyleChange)