It seems like the IE developers already implemented a trick similar to this last year: http://blogs.msdn.com/ie/archive/2008/09/11/introducing-the-.... For all we know, this WebKit improvement is inspired by the IE8 profiler. Accordingly, this is a bad case to use as an example of the alleged benefits of open source over closed source software since the closed source implementation came first and costs no more than the open source version.
In some cases, this might fail to infer a name,
in which case, the function is listed with
the special name “[Anonymous]”.