Refactored invalidation set extraction.

third_party/WebKit/Source/core/css/CSSSelector.h

 /*
  * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
  *               1999 Waldo Bastian (bastian@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 244 matching lines @@
 
     void setNth(int a, int b);
     bool matchNth(int count) const;
 
     bool isAdjacentSelector() const { return m_relation == DirectAdjacent || m_relation == IndirectAdjacent; }
     bool isShadowSelector() const { return m_relation == ShadowPseudo || m_relation == ShadowDeep; }
     bool isAttributeSelector() const { return m_match >= FirstAttributeSelectorMatch; }
     bool isHostPseudoClass() const { return m_pseudoType == PseudoHost || m_pseudoType == PseudoHostContext; }
     bool isUserActionPseudoClass() const;
     bool isInsertionPointCrossing() const { return m_pseudoType == PseudoHostContext || m_pseudoType == PseudoContent; }
+    bool isIdClassOrAttributeSelector() const;
 
     RelationType relation() const { return static_cast<RelationType>(m_relation); }
     void setRelation(RelationType relation)
     {
         m_relation = relation;
         ASSERT(static_cast<RelationType>(m_relation) == relation); // using a bitfield.
     }
 
     MatchType match() const { return static_cast<MatchType>(m_match); }
     void setMatch(MatchType match)
@@ skipping 210 matching lines @@
 }
 
 inline bool CSSSelector::isUserActionPseudoClass() const
 {
     return m_pseudoType == PseudoHover
         || m_pseudoType == PseudoActive
         || m_pseudoType == PseudoFocus
         || m_pseudoType == PseudoDrag;
 }
 
+inline bool CSSSelector::isIdClassOrAttributeSelector() const
+{
+    return isAttributeSelector()
+        || match() == CSSSelector::Id
+        || match() == CSSSelector::Class;
+}
+
 } // namespace blink
 
 #endif // CSSSelector_h