Make all setNeedsReattachLayoutTree happen from updateStyle.

third_party/WebKit/Source/core/dom/ContainerNode.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2013 Apple Inc. 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
@@ skipping 770 matching lines @@
 
 void ContainerNode::detachLayoutTree(const AttachContext& context) {
   AttachContext childrenContext(context);
   childrenContext.resolvedStyle = nullptr;
   childrenContext.clearInvalidation = true;
 
   for (Node* child = firstChild(); child; child = child->nextSibling())
     child->detachLayoutTree(childrenContext);
 
   setChildNeedsStyleRecalc();
-  setChildNeedsReattachLayoutTree();
   Node::detachLayoutTree(context);
 }
 
 void ContainerNode::childrenChanged(const ChildrenChange& change) {
   document().incDOMTreeVersion();
   document().notifyChangeChildren(*this);
   invalidateNodeListCachesInAncestors();
   if (change.isChildInsertion()) {
     if (!childNeedsStyleRecalc()) {
       setChildNeedsStyleRecalc();
       markAncestorsWithChildNeedsStyleRecalc();
     }
-    if (!childNeedsReattachLayoutTree()) {
-      setChildNeedsReattachLayoutTree();
-      markAncestorsWithChildNeedsReattachLayoutTree();
-    }
   }
 }
 
 void ContainerNode::cloneChildNodes(ContainerNode* clone) {
   DummyExceptionStateForTesting exceptionState;
   for (Node* n = firstChild(); n && !exceptionState.hadException();
        n = n->nextSibling())
     clone->appendChild(n->cloneNode(true), exceptionState);
 }
 
@@ skipping 688 matching lines @@
     return true;
 
   if (node->isElementNode() && toElement(node)->shadow())
     return true;
 
   return false;
 }
 #endif
 
 }  // namespace blink