/usr/share/vala/vapi/ is in libfsoframework-dev 0.12.0-7ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/vala/vapi/fsobasics-2.0.deps
/usr/share/vala/vapi/fsobasics-2.0.vapi
/usr/share/vala/vapi/fsoframework-2.0.deps
/usr/share/vala/vapi/fsoframework-2.0.vapi
/usr/share/vala/vapi/fsoresource-2.0.deps
/usr/share/vala/vapi/fsoresource-2.0.vapi
/usr/share/vala/vapi/fsosystem-2.0.deps
/usr/share/vala/vapi/fsosystem-2.0.vapi
/usr/share/vala/vapi/fsotest-2.0.deps
/usr/share/vala/vapi/fsotest-2.0.vapi
/usr/share/vala/vapi/fsotransport-2.0.deps
/usr/share/vala/vapi/fsotransport-2.0.vapi
/usr/share/vala/vapi/gsm0710mux-1.0.deps
/usr/share/vala/vapi/gsm0710mux-1.0.vapi