Maintain child dependent ComputedStyle flags if propagation stops.

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)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1725 matching lines @@
             layoutObject->setStyleInternal(newStyle.get());
         }
     }
 
     if (styleChangeType() >= SubtreeStyleChange)
         return Force;
 
     if (change > Inherit || localChange > Inherit)
         return max(localChange, change);
 
-    if (localChange < Inherit && (oldStyle->hasPseudoElementStyle() || newStyle->hasPseudoElementStyle()))
-        return UpdatePseudoElements;
+    if (localChange < Inherit) {
+        if (oldStyle->hasChildDependentFlags()) {
+            if (childNeedsStyleRecalc())
+                return Inherit;
+            newStyle->copyChildDependentFlagsFrom(*oldStyle);
+        }
+        if (oldStyle->hasPseudoElementStyle() || newStyle->hasPseudoElementStyle())
+            return UpdatePseudoElements;
+    }
 
     return localChange;
 }
 
 void Element::updateCallbackSelectors(const ComputedStyle* oldStyle, const ComputedStyle* newStyle)
 {
     Vector<String> emptyVector;
     const Vector<String>& oldCallbackSelectors = oldStyle ? oldStyle->callbackSelectors() : emptyVector;
     const Vector<String>& newCallbackSelectors = newStyle ? newStyle->callbackSelectors() : emptyVector;
     if (oldCallbackSelectors.isEmpty() && newCallbackSelectors.isEmpty())
@@ skipping 1739 matching lines @@
 {
 #if ENABLE(OILPAN)
     if (hasRareData())
         visitor->trace(elementRareData());
     visitor->trace(m_elementData);
 #endif
     ContainerNode::trace(visitor);
 }
 
 } // namespace blink