HTitle (discontinued) 3.4.1-signed.1-signed 需要重开

作者： Aleksandr Seleznev

Hide title bar if window is maximized.

This add-on has been discontinued!

Legacy extensions support will be dropped in Firefox 57. If you interest in CSD on Linux, please track progress on https://bugzilla.mozilla.org/show_bug.cgi?id=1283299.