/usr/ is in libdconf-dev 0.26.0-2ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/dconf/
/usr/include/dconf/client/
/usr/include/dconf/client/dconf-client.h
/usr/include/dconf/common/
/usr/include/dconf/common/dconf-changeset.h
/usr/include/dconf/common/dconf-enums.h
/usr/include/dconf/common/dconf-paths.h
/usr/include/dconf/dconf.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/dconf.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libdconf-dev/
/usr/share/doc/libdconf-dev/copyright
/usr/share/vala/
/usr/share/vala/vapi/
/usr/share/vala/vapi/dconf.deps
/usr/share/vala/vapi/dconf.vapi
/usr/lib/x86_64-linux-gnu/libdconf.so
/usr/share/doc/libdconf-dev/NEWS.Debian.gz
/usr/share/doc/libdconf-dev/changelog.Debian.gz