document.mozFullScreenEnabled is set to true in the context of Marionette content. However, calling document.documentElement.requestFullScreen() fails and results in a mozfullscreenerror event. My understanding from the docs is that the former attribute should be a reliable indicator of whether the request would succeed. I've attached a short Marionette test illustrating this, along with its output. It can be ran against a checked-out mozilla-central repo as follows: python ~/mozilla-central/testing/marionette/client/marionette/runtests.py --emulator arm --homedir <PATH-TO-B2G-ARM-EMULATOR> ./test_fullscreen.js jgriffin can fix you up with an emulator if you need one; drop him a line directly. This may intersect (or duplicate) Bug 684620. After a short discussion with jgriffin, have filed separately since Bug 684620 is specific to multiprocess.

https://bugzilla.mozilla.org/show_bug.cgi?id=1472046 Move all DOM bugs that haven’t been updated in more than 3 years and has no one currently assigned to P5. If you have questions, please contact :mdaly.

Looks like nothing is going to happen here, closing.

Mass closing as we are no longer working on b2g/firefox os.

Mass closing as we are no longer working on b2g/firefox os.