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

Source/core/dom/shadow/ElementShadow.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 81 matching lines @@
 
 inline ShadowRoot* Node::youngestShadowRoot() const
 {
     if (!this->isElementNode())
         return 0;
     if (ElementShadow* shadow = toElement(this)->shadow())
         return shadow->youngestShadowRoot();
     return 0;
 }
 
+inline void Element::ensureDistribution()
+{
+    ContentDistributor::ensureDistribution(this);
+}
+
 inline ElementShadow* ElementShadow::containingShadow() const
 {
     if (ShadowRoot* parentRoot = host()->containingShadowRoot())
         return parentRoot->owner();
     return 0;
 }
 
 class ShadowRootVector : public Vector<RefPtr<ShadowRoot> > {
 public:
     explicit ShadowRootVector(ElementShadow* tree)
@@ skipping 10 matching lines @@
     if (Node* parent = node->parentNode())
         if (parent->isElementNode())
             return toElement(parent)->shadow();
     return 0;
 }
 
 
 } // namespace
 
 #endif