/usr/share/glib-2.0/schemas/ is in mate-settings-daemon-gstreamer 1.8.2-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.a11y-keyboard.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.background.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.clipboard.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.datetime.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.housekeeping.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.keybindings.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.keyboard.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.media-keys.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.mouse.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.mpris.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.smartcard.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.sound.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.typing-break.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.xrandr.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.xrdb.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.SettingsDaemon.plugins.xsettings.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.applications-at.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.font-rendering.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.keybindings.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.peripherals-smartcard.gschema.xml
/usr/share/glib-2.0/schemas/org.mate.peripherals-touchpad.gschema.xml