One or more of the events at https://w3c.github.io/webvr/#vrdisplayevent-attributes should be fired when a phone is inserted into a Daydream headset.

We'll also need to fire the opposite event(s) when the user exits headset mode.

 

One or more of the events at https://w3c.github.io/webvr/#interface-window should be fired when a phone is inserted into a Daydream headset.

We'll also need to fire the opposite event(s) when the user exits headset mode.