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

Source/core/html/HTMLInputElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
@@ skipping 1224 matching lines @@
 }
 
 static inline bool isRFC2616TokenCharacter(UChar ch)
 {
     return isASCII(ch) && ch > ' ' && ch != '"' && ch != '(' && ch != ')' && ch != ',' && ch != '/' && (ch < ':' || ch > '@') && (ch < '[' || ch > ']') && ch != '{' && ch != '}' && ch != 0x7f;
 }
 
 static bool isValidMIMEType(const String& type)
 {
     size_t slashPosition = type.find('/');
-    if (slashPosition == notFound || !slashPosition || slashPosition == type.length() - 1)
+    if (slashPosition == kNotFound || !slashPosition || slashPosition == type.length() - 1)
         return false;
     for (size_t i = 0; i < type.length(); ++i) {
         if (!isRFC2616TokenCharacter(type[i]) && i != slashPosition)
             return false;
     }
     return true;
 }
 
 static bool isValidFileExtension(const String& type)
 {
@@ skipping 628 matching lines @@
 }
 
 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
 PassRefPtr<RenderStyle> HTMLInputElement::customStyleForRenderer()
 {
     return m_inputTypeView->customStyleForRenderer(originalStyleForRenderer());
 }
 #endif
 
 } // namespace