Add a JSIL benchmark

[GoogleCodeExporter]

I think a JSIL benchmark would be a good candidate for inclusion since it tends 
to stress various parts of a browser, GC & JS runtime in realistic ways. In 
particular:

http://www.playescapegoat.com/?replayURI=/stages2and3.replay&fastReplay&disableS
ound

Is a fully automatic benchmark based on a recording of real gameplay from a 
moderately large game compiled to JS. Timing data is dumped to the log upon 
completion, and it would probably be possible to run it entirely headless by 
faking out the rendering backend and DOM interaction.

Original issue reported on code.google.com by [email protected] on 8 Mar 2013 at 2:53