Is it possible to detect Google Chrome Aura using JavaScript?

Question

navigator.userAgent 

does not report this:

"Mozilla / 5.0 (Windows NT 5.1) AppleWebKit / 537.36 (KHTML, e.g. Gecko) Chrome / 31.0.1613.1 Safari / 537.36"

I only see this (Aura) literally in chrome: //version/strings.js, which is reported in chrome: // version /