Element::recalcStyle() overly reattach()-es InsertionPoints.

Source/core/dom/EventPathWalker.cpp

Index: Source/core/dom/EventPathWalker.cpp
diff --git a/Source/core/dom/EventPathWalker.cpp b/Source/core/dom/EventPathWalker.cpp
index b29af07092a109e805e62cff1f3aaa6d5c9470c2..a3b9760a930000bae474d5d1d847fb60567eef0d 100644
--- a/Source/core/dom/EventPathWalker.cpp
+++ b/Source/core/dom/EventPathWalker.cpp
@@ -53,7 +53,7 @@ void EventPathWalker::moveToParent()
     ASSERT(m_node);
     ASSERT(m_distributedNode);
     if (ElementShadow* shadow = shadowOfParent(m_node)) {
-        ContentDistributor::ensureDistribution(shadow->youngestShadowRoot());
+        shadow->host()->ensureDistribution();
         if (InsertionPoint* insertionPoint = shadow->distributor().findInsertionPointFor(m_distributedNode)) {
             m_node = insertionPoint;
             m_isVisitingInsertionPointInReprojection = true;