/usr/share/ is in lubuntu-extra-sessions 0.39.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/lubuntu-extra-sessions/
/usr/share/lubuntu/
/usr/share/lubuntu/qt/
/usr/share/lubuntu/qt/Trolltech-qt-session.conf
/usr/share/lubuntu/openbox/
/usr/share/lubuntu/openbox/nexus-rc.xml
/usr/share/lubuntu/pcmanfm-qt/
/usr/share/lubuntu/pcmanfm-qt/lxqt/
/usr/share/lubuntu/pcmanfm-qt/lxqt/settings.conf
/usr/share/lxpanel/
/usr/share/lxpanel/profile/
/usr/share/lxpanel/profile/Lubuntu-Nexus7/
/usr/share/lxpanel/profile/Lubuntu-Nexus7/config
/usr/share/lxpanel/profile/Lubuntu-Nexus7/panels/
/usr/share/lxpanel/profile/Lubuntu-Nexus7/panels/bottom
/usr/share/lxpanel/profile/Lubuntu-Nexus7/panels/top
/usr/share/xsessions/
/usr/share/xsessions/lxgames.desktop
/usr/share/xsessions/QLubuntu.desktop
/usr/share/xsessions/lubuntu-nexus7.desktop
/usr/share/doc/
/usr/share/doc/lubuntu-extra-sessions/copyright
/usr/share/doc/lubuntu-extra-sessions/changelog.gz