/usr/share/vala/vapi/unity.deps is in libunity-dev 7.1.4+14.04.20140210-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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gobject-2.0 gio-2.0 dee-1.0 Dbusmenu-0.4