That was quick… v0.1.9 of the Chrome port released!
Install it from here: https://chrome.google.com/extensions/detail/imgdlciiikkjdohinklojokapcmjgmea
Hack on it here:
http://etherpad.com/statusbarcalculator
If you do make any contributions, please remember to enter your name (to the right in Etherpad) so that you will be credited.
Happy calculating!