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

Source/modules/mediastream/MediaStream.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011, 2012 Ericsson AB. 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 163 matching lines @@
         return;
     }
 
     if (!prpTrack) {
         es.throwDOMException(TypeMismatchError);
         return;
     }
 
     RefPtr<MediaStreamTrack> track = prpTrack;
 
-    size_t pos = notFound;
+    size_t pos = kNotFound;
     switch (track->component()->source()->type()) {
     case MediaStreamSource::TypeAudio:
         pos = m_audioTracks.find(track);
-        if (pos != notFound)
+        if (pos != kNotFound)
             m_audioTracks.remove(pos);
         break;
     case MediaStreamSource::TypeVideo:
         pos = m_videoTracks.find(track);
-        if (pos != notFound)
+        if (pos != kNotFound)
             m_videoTracks.remove(pos);
         break;
     }
 
-    if (pos == notFound)
+    if (pos == kNotFound)
         return;
 
     m_descriptor->removeComponent(track->component());
 
     if (!m_audioTracks.size() && !m_videoTracks.size())
         m_descriptor->setEnded();
 
     MediaStreamCenter::instance().didRemoveMediaStreamTrack(m_descriptor.get(), track->component());
 }
 
@@ skipping 100 matching lines @@
     MediaStreamTrackVector* tracks = 0;
     switch (component->source()->type()) {
     case MediaStreamSource::TypeAudio:
         tracks = &m_audioTracks;
         break;
     case MediaStreamSource::TypeVideo:
         tracks = &m_videoTracks;
         break;
     }
 
-    size_t index = notFound;
+    size_t index = kNotFound;
     for (size_t i = 0; i < tracks->size(); ++i) {
         if ((*tracks)[i]->component() == component) {
             index = i;
             break;
         }
     }
-    if (index == notFound)
+    if (index == kNotFound)
         return;
 
     m_descriptor->removeComponent(component);
 
     RefPtr<MediaStreamTrack> track = (*tracks)[index];
     tracks->remove(index);
     scheduleDispatchEvent(MediaStreamTrackEvent::create(eventNames().removetrackEvent, false, false, track));
 }
 
 void MediaStream::scheduleDispatchEvent(PassRefPtr<Event> event)
@@ skipping 18 matching lines @@
 
     events.clear();
 }
 
 URLRegistry& MediaStream::registry() const
 {
     return MediaStreamRegistry::registry();
 }
 
 } // namespace WebCore