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

Source/core/html/HTMLSelectElement.cpp

 /*
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  * 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, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
@@ skipping 937 matching lines @@
 size_t HTMLSelectElement::searchOptionsForValue(const String& value, size_t listIndexStart, size_t listIndexEnd) const
 {
     const Vector<HTMLElement*>& items = listItems();
     size_t loopEndIndex = std::min(items.size(), listIndexEnd);
     for (size_t i = listIndexStart; i < loopEndIndex; ++i) {
         if (!items[i]->hasLocalName(optionTag))
             continue;
         if (toHTMLOptionElement(items[i])->value() == value)
             return i;
     }
-    return notFound;
+    return kNotFound;
 }
 
 void HTMLSelectElement::restoreFormControlState(const FormControlState& state)
 {
     recalcListItems();
 
     const Vector<HTMLElement*>& items = listItems();
     size_t itemsSize = items.size();
     if (!itemsSize)
         return;
 
     for (size_t i = 0; i < itemsSize; ++i) {
         if (!items[i]->hasLocalName(optionTag))
             continue;
         toHTMLOptionElement(items[i])->setSelectedState(false);
     }
 
     if (!multiple()) {
         size_t foundIndex = searchOptionsForValue(state[0], 0, itemsSize);
-        if (foundIndex != notFound)
+        if (foundIndex != kNotFound)
             toHTMLOptionElement(items[foundIndex])->setSelectedState(true);
     } else {
         size_t startIndex = 0;
         for (size_t i = 0; i < state.valueSize(); ++i) {
             const String& value = state[i];
             size_t foundIndex = searchOptionsForValue(value, startIndex, itemsSize);
-            if (foundIndex == notFound)
+            if (foundIndex == kNotFound)
                 foundIndex = searchOptionsForValue(value, 0, startIndex);
-            if (foundIndex == notFound)
+            if (foundIndex == kNotFound)
                 continue;
             toHTMLOptionElement(items[foundIndex])->setSelectedState(true);
             startIndex = foundIndex + 1;
         }
     }
 
     setOptionsChangedOnRenderer();
     setNeedsValidityCheck();
 }
 
@@ skipping 574 matching lines @@
     return true;
 }
 
 bool HTMLSelectElement::anonymousIndexedSetterRemove(unsigned index, ExceptionState& es)
 {
     remove(index);
     return true;
 }
 
 } // namespace