Invalidation set features are not skippable.

Source/core/css/RuleFeature.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 26 matching lines @@
 #include "core/css/invalidation/DescendantInvalidationSet.h"
 #include "core/dom/Element.h"
 #include "core/dom/Node.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "wtf/BitVector.h"
 
 namespace blink {
 
 static bool isSkippableComponentForInvalidation(const CSSSelector& selector)
 {
-    if (selector.match() == CSSSelector::Tag
-        || selector.match() == CSSSelector::Id
-        || selector.isAttributeSelector())
+    if (selector.match() == CSSSelector::Tag) {
+        ASSERT(selector.tagQName().localName() == starAtom);
         return true;
+    }
     if (selector.match() == CSSSelector::PseudoElement) {
         switch (selector.pseudoType()) {
         case CSSSelector::PseudoBefore:
         case CSSSelector::PseudoAfter:
         case CSSSelector::PseudoBackdrop:
         case CSSSelector::PseudoShadow:
             return true;
         default:
-            return selector.isCustomPseudoElement();
+            ASSERT(!selector.isCustomPseudoElement());
+            return false;
         }
     }
     if (selector.match() != CSSSelector::PseudoClass)
         return false;
     switch (selector.pseudoType()) {
     case CSSSelector::PseudoEmpty:
     case CSSSelector::PseudoFirstChild:
     case CSSSelector::PseudoFirstOfType:
     case CSSSelector::PseudoLastChild:
     case CSSSelector::PseudoLastOfType:
@@ skipping 453 matching lines @@
     visitor->trace(uncommonAttributeRules);
     visitor->trace(m_classInvalidationSets);
     visitor->trace(m_attributeInvalidationSets);
     visitor->trace(m_idInvalidationSets);
     visitor->trace(m_pseudoInvalidationSets);
     visitor->trace(m_styleInvalidator);
 #endif
 }
 
 } // namespace blink