/usr/share/ is in libunistring-dev 0.9.3-5.2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/
/usr/share/doc/libunistring-dev/
/usr/share/doc/libunistring-dev/html/
/usr/share/doc/libunistring-dev/html/libunistring_6.html
/usr/share/doc/libunistring-dev/html/libunistring_5.html
/usr/share/doc/libunistring-dev/html/libunistring_19.html
/usr/share/doc/libunistring-dev/html/libunistring_1.html
/usr/share/doc/libunistring-dev/html/libunistring_14.html
/usr/share/doc/libunistring-dev/html/libunistring_3.html
/usr/share/doc/libunistring-dev/html/libunistring_10.html
/usr/share/doc/libunistring-dev/html/libunistring_15.html
/usr/share/doc/libunistring-dev/html/libunistring_18.html
/usr/share/doc/libunistring-dev/html/libunistring_7.html
/usr/share/doc/libunistring-dev/html/libunistring_abt.html
/usr/share/doc/libunistring-dev/html/libunistring_8.html
/usr/share/doc/libunistring-dev/html/libunistring_toc.html
/usr/share/doc/libunistring-dev/html/libunistring_9.html
/usr/share/doc/libunistring-dev/html/libunistring_16.html
/usr/share/doc/libunistring-dev/html/libunistring_4.html
/usr/share/doc/libunistring-dev/html/libunistring_17.html
/usr/share/doc/libunistring-dev/html/libunistring_13.html
/usr/share/doc/libunistring-dev/html/libunistring_11.html
/usr/share/doc/libunistring-dev/html/libunistring_2.html
/usr/share/doc/libunistring-dev/html/libunistring_12.html
/usr/share/doc/libunistring-dev/copyright
/usr/share/doc-base/
/usr/share/doc-base/libunistring-manual
/usr/share/info/
/usr/share/info/libunistring.info.gz
/usr/share/doc/libunistring-dev/AUTHORS
/usr/share/doc/libunistring-dev/THANKS
/usr/share/doc/libunistring-dev/BUGS
/usr/share/doc/libunistring-dev/README
/usr/share/doc/libunistring-dev/changelog.Debian.gz
/usr/share/doc/libunistring-dev/NEWS.gz