User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:33.0) Gecko/20100101 Firefox/33.0 Build ID: 20141013200257 Steps to reproduce: Visit a site like https://mail.google.com/mail. The browser is redirected to accounts.google.com and that server sends a x-auto-login header in the response. Actual results: Nothing Expected results: When using Chrome on Android Chrome detects the x-auto-login header and uses the Android AccountManager to generate a token that directly logs the user in. Please look here for more details: http://ignisvulpis.blogspot.de/2014/09/deviceautologin.html (Ubuntu?) Although an initial implemtation would be on Android.