Started migrating ui_unix.h. SyncEnableState can be dropped from the GTK+ port, so let's do that next.
Started migrating ui_unix.h. SyncEnableState can be dropped from the GTK+ port, so let's do that next.

sclukey/libui,sclukey/libui,ProtonMail/libui,tbodt/libui,ProtonMail/libui,ProtonMail/libui,tbodt/libui