Spun off from bug 605973


mahmadi@, sorry for the late reply. The version (as served by Google Web Font) is rather old (> 1 yr old. A bug was filed internally for its update). 

The canonical source for Roboto is https://github.com/google/roboto.  Given that Chrome OS has its own copy from the upstream (canonical source), we'd better bundle the same version for non-Chrome-OS Chrome(Mac/Linux/Windows). Note that this also matches what's shipped in the latest Android as well (version-wise).