/usr/ is in unity-greeter-session-broadcast 0.1+14.10.20140601-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/glib-2.0/
/usr/share/glib-2.0/schemas/
/usr/share/glib-2.0/schemas/com.canonical.Unity.Greeter.Broadcast.gschema.xml
/usr/share/upstart/
/usr/share/upstart/sessions/
/usr/share/upstart/sessions/unity-greeter-session-broadcast-session.conf
/usr/share/doc/
/usr/share/doc/unity-greeter-session-broadcast/
/usr/share/doc/unity-greeter-session-broadcast/changelog.Debian.gz
/usr/share/doc/unity-greeter-session-broadcast/copyright
/usr/share/dbus-1/
/usr/share/dbus-1/interfaces/
/usr/share/dbus-1/interfaces/com.canonical.Unity.Greeter.Broadcast.xml
/usr/share/dbus-1/system-services/
/usr/share/dbus-1/system-services/com.canonical.Unity.Greeter.Broadcast.service
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/unity-greeter-session-broadcast/
/usr/lib/x86_64-linux-gnu/unity-greeter-session-broadcast/unity-greeter-session-broadcast-service