The source from this directory was copied from the PerformanceTests/Speedometer directory of the Webkit repository at: https://svn.webkit.org/repository/webkit/trunk/PerformanceTests/Speedometer2.1/ The SVN revision used was: 294153 The contents of this directory are intended for use to "train" the profile guided optimization (PGO) of Firefox and for benchmarking scenarios. The files inside this directory are not intended to ship with Firefox or any other product. If files inside this directory are useful for other purposes (e.g. JavaScript libraries), consumers should vendor those files separately, as it is not appropriate to pull in components of Speedometer for use outside of Speedometer.