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

Source/core/platform/text/LocaleToScriptMappingDefault.cpp

 /*
  * Copyright (C) 2011 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 373 matching lines @@
         for (size_t i = 0; i < sizeof(localeScriptList) / sizeof(localeScriptList[0]); ++i)
             localeScriptMap.set(localeScriptList[i].locale, localeScriptList[i].script);
     }
 
     String canonicalLocale = locale.lower().replace('-', '_');
     while (!canonicalLocale.isEmpty()) {
         HashMap<String, UScriptCode>::iterator it = localeScriptMap.find(canonicalLocale);
         if (it != localeScriptMap.end())
             return it->value;
         size_t pos = canonicalLocale.reverseFind('_');
-        if (pos == notFound)
+        if (pos == kNotFound)
             break;
         UScriptCode code = scriptNameToCode(canonicalLocale.substring(pos + 1));
         if (code != USCRIPT_INVALID_CODE && code != USCRIPT_UNKNOWN)
             return code;
         canonicalLocale = canonicalLocale.substring(0, pos);
     }
     return USCRIPT_COMMON;
 }
 
 } // namespace WebCore