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

Source/web/WebPluginContainerImpl.cpp

 /*
  * Copyright (C) 2009 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 584 matching lines @@
 }
 
 bool WebPluginContainerImpl::wantsWheelEvents()
 {
     return m_wantsWheelEvents;
 }
 
 void WebPluginContainerImpl::willDestroyPluginLoadObserver(WebPluginLoadObserver* observer)
 {
     size_t pos = m_pluginLoadObservers.find(observer);
-    if (pos == notFound)
+    if (pos == kNotFound)
         return;
     m_pluginLoadObservers.remove(pos);
 }
 
 ScrollbarGroup* WebPluginContainerImpl::scrollbarGroup()
 {
     if (!m_scrollbarGroup)
         m_scrollbarGroup = adoptPtr(new ScrollbarGroup(m_element->document().frame()->view(), frameRect()));
     return m_scrollbarGroup.get();
 }
@@ skipping 276 matching lines @@
         // Take our element and get the clip rect from the enclosing layer and
         // frame view.
         clipRect.intersect(
             m_element->document().view()->windowClipRectForFrameOwner(m_element, true));
     }
 
     return clipRect;
 }
 
 } // namespace WebKit