No pseudo elements in SelectorChecker::Mode QueryingRules.

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

 /*
  * 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, 2013 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 27 matching lines @@
 class ContainerNode;
 class Element;
 class LayoutScrollbar;
 class ComputedStyle;
 
 class SelectorChecker {
     WTF_MAKE_NONCOPYABLE(SelectorChecker);
     STACK_ALLOCATED();
 public:
     enum VisitedMatchType { VisitedMatchDisabled, VisitedMatchEnabled };
-    enum Mode { ResolvingStyle = 0, CollectingStyleRules, CollectingCSSRules, QueryingRules, SharingRules };
+    enum Mode { ResolvingStyle, CollectingStyleRules, CollectingCSSRules, QueryingRules, SharingRules };
 
     explicit SelectorChecker(Mode);
 
     struct SelectorCheckingContext {
         STACK_ALLOCATED();
     public:
         // Initial selector constructor
         SelectorCheckingContext(Element* element, VisitedMatchType visitedMatchType)
             : selector(nullptr)
             , element(element)
@@ skipping 60 matching lines @@
     bool checkScrollbarPseudoClass(const SelectorCheckingContext&, MatchResult&) const;
     bool checkPseudoHost(const SelectorCheckingContext&, MatchResult&) const;
     bool checkPseudoNot(const SelectorCheckingContext&, MatchResult&) const;
 
     Mode m_mode;
 };
 
 } // namespace blink
 
 #endif