Don't mark Text with ChildNeedsStyleRecalc.

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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 834 matching lines @@
 void ContainerNode::attach(const AttachContext& context)
 {
     attachChildren(context);
     clearChildNeedsStyleRecalc();
     Node::attach(context);
 }
 
 void ContainerNode::detach(const AttachContext& context)
 {
     detachChildren(context);
-    clearChildNeedsStyleRecalc();
+    setChildNeedsStyleRecalc();
     Node::detach(context);
 }
 
 void ContainerNode::childrenChanged(const ChildrenChange& change)
 {
     document().incDOMTreeVersion();
     if (!change.byParser && change.type != TextChanged)
         document().updateRangesAfterChildrenChanged(this);
     invalidateNodeListCachesInAncestors();
     if (change.isChildInsertion() && !childNeedsStyleRecalc()) {
@@ skipping 637 matching lines @@
         return true;
 
     if (node->isElementNode() && toElement(node)->shadow())
         return true;
 
     return false;
 }
 #endif
 
 } // namespace blink