Remove needsShadowTreeWalker flag

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 2267 matching lines @@
     if (element && (needsStyleRecalc() || shouldRecalcStyle(change, element))) {
         // PseudoElement styles hang off their parent element's style so if we needed
         // a style recalc we should Force one on the pseudo.
         element->recalcStyle(needsStyleRecalc() ? Force : change);
 
         // Wait until our parent is not displayed or pseudoElementRendererIsNeeded
         // is false, otherwise we could continously create and destroy PseudoElements
         // when RenderObject::isChildAllowed on our parent returns false for the
         // PseudoElement's renderer for each style recalc.
         if (!renderer() || !pseudoElementRendererIsNeeded(renderer()->getCachedPseudoStyle(pseudoId)))
-            setPseudoElement(pseudoId, 0);
+            elementRareData()->setPseudoElement(pseudoId, 0);
     } else if (change >= Inherit || needsStyleRecalc())
         createPseudoElementIfNeeded(pseudoId);
 }
 
 void Element::createPseudoElementIfNeeded(PseudoId pseudoId)
 {
     if (!document()->styleSheetCollection()->usesBeforeAfterRules())
         return;
 
     if (!renderer() || !pseudoElementRendererIsNeeded(renderer()->getCachedPseudoStyle(pseudoId)))
         return;
 
     if (!renderer()->canHaveGeneratedChildren())
         return;
 
     ASSERT(!isPseudoElement());
     RefPtr<PseudoElement> element = PseudoElement::create(this, pseudoId);
     element->attach();
-    setPseudoElement(pseudoId, element.release());
-}
-
-bool Element::hasPseudoElements() const
-{
-    return hasRareData() && elementRareData()->hasPseudoElements();
+    ensureElementRareData()->setPseudoElement(pseudoId, element.release());
 }
 
 PseudoElement* Element::pseudoElement(PseudoId pseudoId) const
 {
     return hasRareData() ? elementRareData()->pseudoElement(pseudoId) : 0;
 }
 
-void Element::setPseudoElement(PseudoId pseudoId, PassRefPtr<PseudoElement> element)
-{
-    ensureElementRareData()->setPseudoElement(pseudoId, element);
-    resetNeedsShadowTreeWalker();
-}
-
 RenderObject* Element::pseudoElementRenderer(PseudoId pseudoId) const
 {
     if (PseudoElement* element = pseudoElement(pseudoId))
         return element->renderer();
     return 0;
 }
 
 bool Element::matchesReadOnlyPseudoClass() const
 {
     return false;
@@ skipping 785 matching lines @@
     return 0;
 }
 
 Attribute* UniqueElementData::attributeItem(unsigned index)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(index < length());
     return &m_attributeVector.at(index);
 }
 
 } // namespace WebCore