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

Source/web/WebFrameImpl.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 1108 matching lines @@
         return false;
     IntRect intRect = frame()->editor().firstRectForRange(range.get());
     rect = WebRect(intRect);
     rect = frame()->view()->contentsToWindow(rect);
     return true;
 }
 
 size_t WebFrameImpl::characterIndexForPoint(const WebPoint& webPoint) const
 {
     if (!frame())
-        return notFound;
+        return kNotFound;
 
     IntPoint point = frame()->view()->windowToContents(webPoint);
     HitTestResult result = frame()->eventHandler()->hitTestResultAtPoint(point, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::DisallowShadowContent);
     RefPtr<Range> range = frame()->rangeForPoint(result.roundedPointInInnerNodeFrame());
     if (!range)
-        return notFound;
+        return kNotFound;
 
     size_t location, length;
     TextIterator::getLocationAndLengthFromRange(frame()->selection().rootEditableElementOrDocumentElement(), range.get(), location, length);
     return location;
 }
 
 bool WebFrameImpl::executeCommand(const WebString& name, const WebNode& node)
 {
     ASSERT(frame());
 
@@ skipping 1330 matching lines @@
 
         // There is a possibility that the frame being detached was the only
         // pending one. We need to make sure final replies can be sent.
         flushCurrentScopingEffort(m_findRequestIdentifier);
 
         cancelPendingScopingEffort();
     }
 }
 
 } // namespace WebKit