/usr/share/applications/ is in unity-control-center 14.04.3+14.04.20140410-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/applications/unity-network-panel.desktop
/usr/share/applications/unity-universal-access-panel.desktop
/usr/share/applications/unity-keyboard-panel.desktop
/usr/share/applications/unity-mouse-panel.desktop
/usr/share/applications/unity-datetime-panel.desktop
/usr/share/applications/unity-color-panel.desktop
/usr/share/applications/unity-bluetooth-panel.desktop
/usr/share/applications/unity-sound-panel.desktop
/usr/share/applications/unity-region-panel.desktop
/usr/share/applications/unity-screen-panel.desktop
/usr/share/applications/unity-info-panel.desktop
/usr/share/applications/unity-control-center.desktop
/usr/share/applications/unity-user-accounts-panel.desktop
/usr/share/applications/unity-wacom-panel.desktop
/usr/share/applications/unity-display-panel.desktop
/usr/share/applications/unity-power-panel.desktop
/usr/share/applications/unity-appearance-panel.desktop