/usr/share/vala-0.22/vapi/gnome-desktop-2.0.deps is in valac-0.22-vapi 0.22.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | atk
cairo
gio-2.0
gdk-pixbuf-2.0
gdk-2.0
pango
gtk+-2.0
libgnome-2.0
libgnomeui-2.0
gnome-vfs-2.0
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