Make all setNeedsReattachLayoutTree happen from updateStyle.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc.
  * All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
@@ skipping 1864 matching lines @@
             !parentComputedStyle()) {
           data->clearComputedStyle();
         }
       }
 
       if (change >= IndependentInherit) {
         if (ElementAnimations* elementAnimations = data->elementAnimations())
           elementAnimations->setAnimationStyleChange(false);
       }
     }
-    if (parentComputedStyle())
+    if (parentComputedStyle()) {
       change = recalcOwnStyle(change);
+    } else if (needsAttach()) {
+      setNeedsReattachLayoutTree();
+      change = Reattach;
+    }
+
     // Needed because the rebuildLayoutTree code needs to see what the
     // styleChangeType() was on reattach roots. See Node::reattachLayoutTree()
     // for an example.
     if (change != Reattach)
       clearNeedsStyleRecalc();
   }
 
   // If we are going to reattach we don't need to recalc the style of
   // our descendants anymore.
   if (change < Reattach &&
@@ skipping 2269 matching lines @@
 }
 
 DEFINE_TRACE_WRAPPERS(Element) {
   if (hasRareData()) {
     visitor->traceWrappers(elementRareData());
   }
   ContainerNode::traceWrappers(visitor);
 }
 
 }  // namespace blink