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

Source/core/platform/text/DecodeEscapeSequences.h

 /*
  * Copyright (C) 2011 Daniel Bates (dbates@intudata.com). All Rights Reserved.
  * 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 112 matching lines @@
 };
 
 template<typename EscapeSequence>
 String decodeEscapeSequences(const String& string, const WTF::TextEncoding& encoding)
 {
     StringBuilder result;
     size_t length = string.length();
     size_t decodedPosition = 0;
     size_t searchPosition = 0;
     size_t encodedRunPosition;
-    while ((encodedRunPosition = EscapeSequence::findInString(string, searchPosition)) != notFound) {
+    while ((encodedRunPosition = EscapeSequence::findInString(string, searchPosition)) != kNotFound) {
         size_t encodedRunEnd = EscapeSequence::findEndOfRun(string, encodedRunPosition, length);
         searchPosition = encodedRunEnd;
         if (encodedRunEnd == encodedRunPosition) {
             ++searchPosition;
             continue;
         }
 
         String decoded = string.is8Bit() ?
             EscapeSequence::decodeRun(string.characters8() + encodedRunPosition, encodedRunEnd - encodedRunPosition, encoding) :
             EscapeSequence::decodeRun(string.characters16() + encodedRunPosition, encodedRunEnd - encodedRunPosition, encoding);
 
         if (decoded.isEmpty())
             continue;
 
         result.append(string, decodedPosition, encodedRunPosition - decodedPosition);
         result.append(decoded);
         decodedPosition = encodedRunEnd;
     }
     result.append(string, decodedPosition, length - decodedPosition);
     return result.toString();
 }
 
 } // namespace WebCore
 
 #endif // DecodeEscapeSequences_h