Use invalidation set for :empty pseudo changes.

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 1700 matching lines @@
     }
     return false;
 }
 
 void Element::checkForEmptyStyleChange()
 {
     RenderStyle* style = renderStyle();
 
     if (!style && !styleAffectedByEmpty())
         return;
+    if (styleChangeType() >= SubtreeStyleChange)
+        return;
+    if (!inActiveDocument())
+        return;
+    if (!document().styleResolver())
+        return;
 
     if (!style || (styleAffectedByEmpty() && (!style->emptyState() || hasChildren())))
-        setNeedsStyleRecalc(SubtreeStyleChange);
+        document().styleResolver()->ensureUpdatedRuleFeatureSet().scheduleStyleInvalidationForPseudoChange(CSSSelector::PseudoEmpty, *this);
 }
 
 void Element::childrenChanged(const ChildrenChange& change)
 {
     ContainerNode::childrenChanged(change);
 
     checkForEmptyStyleChange();
     if (!change.byParser && change.isChildElementChange())
         checkForSiblingStyleChanges(change.type == ElementRemoved ? SiblingElementRemoved : SiblingElementInserted, change.siblingBeforeChange, change.siblingAfterChange);
 
@@ skipping 1527 matching lines @@
         return v8::Handle<v8::Object>();
 
     wrapper->SetPrototype(binding->prototype());
 
     wrapperType->refObject(toScriptWrappableBase());
     V8DOMWrapper::associateObjectWithWrapperNonTemplate(this, wrapperType, wrapper, isolate);
     return wrapper;
 }
 
 } // namespace blink