WTF::notFound looks too much like a local variable.

Source/core/css/RuleSet.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 341 matching lines @@
 
 void RuleSet::addChildRules(const Vector<RefPtr<StyleRuleBase> >& rules, const MediaQueryEvaluator& medium, StyleResolver* resolver, const ContainerNode* scope, bool hasDocumentSecurityOrigin, AddRuleFlags addRuleFlags)
 {
     for (unsigned i = 0; i < rules.size(); ++i) {
         StyleRuleBase* rule = rules[i].get();
 
         if (rule->isStyleRule()) {
             StyleRule* styleRule = static_cast<StyleRule*>(rule);
 
             const CSSSelectorList& selectorList = styleRule->selectorList();
-            for (size_t selectorIndex = 0; selectorIndex != notFound; selectorIndex = selectorList.indexOfNextSelectorAfter(selectorIndex)) {
+            for (size_t selectorIndex = 0; selectorIndex != kNotFound; selectorIndex = selectorList.indexOfNextSelectorAfter(selectorIndex)) {
                 if (selectorList.hasShadowDistributedAt(selectorIndex)) {
                     if (isDocumentScope(scope))
                         continue;
                     resolver->ruleSets().shadowDistributedRules().addRule(styleRule, selectorIndex, const_cast<ContainerNode*>(scope), addRuleFlags);
                 } else
                     addRule(styleRule, selectorIndex, addRuleFlags);
             }
         } else if (rule->isPageRule())
             addPageRule(static_cast<StyleRulePage*>(rule));
         else if (rule->isMediaRule()) {
@@ skipping 43 matching lines @@
     }
 
     bool hasDocumentSecurityOrigin = resolver && resolver->document().securityOrigin()->canRequest(sheet->baseURL());
     AddRuleFlags addRuleFlags = static_cast<AddRuleFlags>((hasDocumentSecurityOrigin ? RuleHasDocumentSecurityOrigin : 0) | (!scope ? RuleCanUseFastCheckSelector : 0));
 
     addChildRules(sheet->childRules(), medium, resolver, scope, hasDocumentSecurityOrigin, addRuleFlags);
 }
 
 void RuleSet::addStyleRule(StyleRule* rule, AddRuleFlags addRuleFlags)
 {
-    for (size_t selectorIndex = 0; selectorIndex != notFound; selectorIndex = rule->selectorList().indexOfNextSelectorAfter(selectorIndex))
+    for (size_t selectorIndex = 0; selectorIndex != kNotFound; selectorIndex = rule->selectorList().indexOfNextSelectorAfter(selectorIndex))
         addRule(rule, selectorIndex, addRuleFlags);
 }
 
 void RuleSet::compactPendingRules(PendingRuleMap& pendingMap, CompactRuleMap& compactMap)
 {
     PendingRuleMap::iterator end = pendingMap.end();
     for (PendingRuleMap::iterator it = pendingMap.begin(); it != end; ++it) {
         OwnPtr<LinkedStack<RuleData> > pendingRules = it->value.release();
         CompactRuleMap::iterator compactRules = compactMap.add(it->key, nullptr).iterator;
 
@@ skipping 18 matching lines @@
     compactPendingRules(pendingRules->shadowPseudoElementRules, m_shadowPseudoElementRules);
     m_linkPseudoClassRules.shrinkToFit();
     m_cuePseudoRules.shrinkToFit();
     m_focusPseudoClassRules.shrinkToFit();
     m_universalRules.shrinkToFit();
     m_pageRules.shrinkToFit();
     m_viewportRules.shrinkToFit();
 }
 
 } // namespace WebCore