Sorry the ling is not correct, the plunker link is
http://plnkr.co/M0wmvDMET0mGaLLneP2y
1- I added a route for POST request on the app url
1- Real login is done the angular way ($http request) with a click handler on the submit button (not a submit input).
2- if succes, then call the submit action with jquery. This trigger chrome to ask to save the password, and because the cookie is already set the login modal does not appear.
A better solution would be welcome!