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

Source/core/platform/text/mac/LocaleMac.mm

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 
 using namespace std;
 
 namespace WebCore {
 
 static inline String languageFromLocale(const String& locale)
 {
     String normalizedLocale = locale;
     normalizedLocale.replace('-', '_');
     size_t separatorPosition = normalizedLocale.find('_');
-    if (separatorPosition == notFound)
+    if (separatorPosition == kNotFound)
         return normalizedLocale;
     return normalizedLocale.left(separatorPosition);
 }
 
 static RetainPtr<NSLocale> determineLocale(const String& locale)
 {
     RetainPtr<NSLocale> currentLocale = [NSLocale currentLocale];
     String currentLocaleLanguage = languageFromLocale(String([currentLocale.get() localeIdentifier]));
     String localeLanguage = languageFromLocale(locale);
     if (equalIgnoringCase(currentLocaleLanguage, localeLanguage))
@@ skipping 260 matching lines @@
     ASSERT(symbols.size() == DecimalSymbolsSize);
 
     String positivePrefix([formatter.get() positivePrefix]);
     String positiveSuffix([formatter.get() positiveSuffix]);
     String negativePrefix([formatter.get() negativePrefix]);
     String negativeSuffix([formatter.get() negativeSuffix]);
     setLocaleData(symbols, positivePrefix, positiveSuffix, negativePrefix, negativeSuffix);
 }
 
 }