The magnifier should be enabled/disabled via the appropriate
GSettings key - otherwise the setting gets out of sync with the
actual state of the magnifier.
https://bugzilla.gnome.org/show_bug.cgi?id=636151
gnome-settings-daemon has moved to GSettings for most settings, we
should adapt as well. The only remaining GConf key is for metacity
(visual bell).
https://bugzilla.gnome.org/show_bug.cgi?id=634693
Introduce the Universal Access status indicator as designed, modeled
after the similar UI provided by g-s-d. This indicator allows the user
to change rapidly the keyboard and mouse behaviour (sticky keys, slow
keys, bounce keys, mouse keys), as well as the enabled ATs (magnifier,
screen reader, screen keyboard) and the HighContrast Gtk theme.
https://bugzilla.gnome.org/show_bug.cgi?id=624916