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

Source/core/css/PropertySetCSSStyleDeclaration.cpp

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Research In Motion Limited. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 194 matching lines @@
     return m_propertySet->isPropertyImplicit(propertyID);
 }
 
 void PropertySetCSSStyleDeclaration::setProperty(const String& propertyName, const String& value, const String& priority, ExceptionState& es)
 {
     StyleAttributeMutationScope mutationScope(this);
     CSSPropertyID propertyID = cssPropertyID(propertyName);
     if (!propertyID)
         return;
 
-    bool important = priority.find("important", 0, false) != notFound;
+    bool important = priority.find("important", 0, false) != kNotFound;
 
     willMutate();
 
     bool changed = m_propertySet->setProperty(propertyID, value, important, contextStyleSheet());
 
     didMutate(changed ? PropertyChanged : NoChanges);
 
     if (changed) {
         // CSS DOM requires raising SyntaxError of parsing failed, but this is too dangerous for compatibility,
         // see <http://bugs.webkit.org/show_bug.cgi?id=7296>.
@@ skipping 189 matching lines @@
     m_parentElement->invalidateStyleAttribute();
     StyleAttributeMutationScope(this).didInvalidateStyleAttr();
 }
 
 CSSStyleSheet* InlineCSSStyleDeclaration::parentStyleSheet() const
 {
     return m_parentElement ? m_parentElement->document().elementSheet() : 0;
 }
 
 } // namespace WebCore