47 bytes, text/x-phabricator-request
|Details | Review|
We may hide system titlebar by default at least on some well tested and recent enough platforms (Gnome derivates and Gtk+ > 3.20).
This patch implements -moz-gtk-csd-hide-titlebar-by-default media query to check if the system titlebar should be disabled by default on Linux systems (it's already disabled on Window/Mac). It also removes explicit definition of browser.tabs.drawInTitlebar preference on Linux. When browser.tabs.drawInTitlebar is missing the -moz-gtk-csd-hide-titlebar-by-default is used to obtain the titlebar state. When browser.tabs.drawInTitlebar is set in about:config or by Customize menu, the user peference is used instead of the default. It also fixes a -moz-gtk-csd-available media query, it was always true regardless the actual system setting.
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