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

Source/wtf/text/WTFString.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 196 matching lines @@
     static String number(unsigned long long);
 
     static String number(double, unsigned precision = 6, TrailingZerosTruncatingPolicy = TruncateTrailingZeros);
 
     // Number to String conversion following the ECMAScript definition.
     static String numberToStringECMAScript(double);
     static String numberToStringFixedWidth(double, unsigned decimalPlaces);
 
     // Find a single character or string, also with match function & latin1 forms.
     size_t find(UChar c, unsigned start = 0) const
-        { return m_impl ? m_impl->find(c, start) : notFound; }
+        { return m_impl ? m_impl->find(c, start) : kNotFound; }
 
     size_t find(const String& str) const
-        { return m_impl ? m_impl->find(str.impl()) : notFound; }
+        { return m_impl ? m_impl->find(str.impl()) : kNotFound; }
     size_t find(const String& str, unsigned start) const
-        { return m_impl ? m_impl->find(str.impl(), start) : notFound; }
+        { return m_impl ? m_impl->find(str.impl(), start) : kNotFound; }
 
     size_t find(CharacterMatchFunctionPtr matchFunction, unsigned start = 0) const
-        { return m_impl ? m_impl->find(matchFunction, start) : notFound; }
+        { return m_impl ? m_impl->find(matchFunction, start) : kNotFound; }
     size_t find(const LChar* str, unsigned start = 0) const
-        { return m_impl ? m_impl->find(str, start) : notFound; }
+        { return m_impl ? m_impl->find(str, start) : kNotFound; }
 
     size_t findNextLineStart(unsigned start = 0) const
-        { return m_impl ? m_impl->findNextLineStart(start) : notFound; }
+        { return m_impl ? m_impl->findNextLineStart(start) : kNotFound; }
 
     // Find the last instance of a single character or string.
     size_t reverseFind(UChar c, unsigned start = UINT_MAX) const
-        { return m_impl ? m_impl->reverseFind(c, start) : notFound; }
+        { return m_impl ? m_impl->reverseFind(c, start) : kNotFound; }
     size_t reverseFind(const String& str, unsigned start = UINT_MAX) const
-        { return m_impl ? m_impl->reverseFind(str.impl(), start) : notFound; }
+        { return m_impl ? m_impl->reverseFind(str.impl(), start) : kNotFound; }
 
     // Case insensitive string matching.
     size_t findIgnoringCase(const LChar* str, unsigned start = 0) const
-        { return m_impl ? m_impl->findIgnoringCase(str, start) : notFound; }
+        { return m_impl ? m_impl->findIgnoringCase(str, start) : kNotFound; }
     size_t findIgnoringCase(const String& str, unsigned start = 0) const
-        { return m_impl ? m_impl->findIgnoringCase(str.impl(), start) : notFound; }
+        { return m_impl ? m_impl->findIgnoringCase(str.impl(), start) : kNotFound; }
     size_t reverseFindIgnoringCase(const String& str, unsigned start = UINT_MAX) const
-        { return m_impl ? m_impl->reverseFindIgnoringCase(str.impl(), start) : notFound; }
+        { return m_impl ? m_impl->reverseFindIgnoringCase(str.impl(), start) : kNotFound; }
 
     // Wrappers for find & reverseFind adding dynamic sensitivity check.
     size_t find(const LChar* str, unsigned start, bool caseSensitive) const
         { return caseSensitive ? find(str, start) : findIgnoringCase(str, start); }
     size_t find(const String& str, unsigned start, bool caseSensitive) const
         { return caseSensitive ? find(str, start) : findIgnoringCase(str, start); }
     size_t reverseFind(const String& str, unsigned start, bool caseSensitive) const
         { return caseSensitive ? reverseFind(str, start) : reverseFindIgnoringCase(str, start); }
 
     Vector<UChar> charactersWithNullTermination() const;
     unsigned copyTo(UChar* buffer, unsigned pos, unsigned maxLength) const;
 
     template<size_t inlineCapacity>
     void appendTo(Vector<UChar, inlineCapacity>&, unsigned pos = 0, unsigned len = UINT_MAX) const;
 
     template<typename BufferType>
     void appendTo(BufferType&, unsigned pos = 0, unsigned len = UINT_MAX) const;
 
     template<size_t inlineCapacity>
     void prependTo(Vector<UChar, inlineCapacity>&, unsigned pos = 0, unsigned len = UINT_MAX) const;
 
     UChar32 characterStartingAt(unsigned) const;
 
-    bool contains(UChar c) const { return find(c) != notFound; }
-    bool contains(const LChar* str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != notFound; }
-    bool contains(const String& str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != notFound; }
+    bool contains(UChar c) const { return find(c) != kNotFound; }
+    bool contains(const LChar* str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != kNotFound; }
+    bool contains(const String& str, bool caseSensitive = true) const { return find(str, 0, caseSensitive) != kNotFound; }
 
     bool startsWith(const String& s, bool caseSensitive = true) const
         { return m_impl ? m_impl->startsWith(s.impl(), caseSensitive) : s.isEmpty(); }
     bool startsWith(UChar character) const
         { return m_impl ? m_impl->startsWith(character) : false; }
     template<unsigned matchLength>
     bool startsWith(const char (&prefix)[matchLength], bool caseSensitive = true) const
         { return m_impl ? m_impl->startsWith<matchLength>(prefix, caseSensitive) : !matchLength; }
 
     bool endsWith(const String& s, bool caseSensitive = true) const
@@ skipping 427 matching lines @@
 using WTF::charactersToFloat;
 using WTF::equal;
 using WTF::equalIgnoringCase;
 using WTF::find;
 using WTF::isAllSpecialCharacters;
 using WTF::isSpaceOrNewline;
 using WTF::reverseFind;
 
 #include "wtf/text/AtomicString.h"
 #endif