how to make use fake ui permanent in chrome?

I have made an application to record a video by following this steps : http://ift.tt/1vdZW0w,

I want access to allow the camera always 'allow', i've tried bypass the allow permission in popup allow webcam use start chrome --use--fake-ui--for--media-stream and it's work for me, but when i closed my chrome and then i opened chrome again , the popup permission allow webcam still showing, what's the solution?