/usr/ is in php-http-webdav-server 1.0.0RC4-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/HTTP/WebDAV/Server/
/usr/share/
/usr/share/php/
/usr/share/php/.registry/
/usr/share/php/.registry/http_webdav_server.reg
/usr/share/php/HTTP/
/usr/share/php/HTTP/WebDAV/
/usr/share/php/HTTP/WebDAV/Server/Filesystem.php
/usr/share/php/HTTP/WebDAV/Tools/
/usr/share/php/HTTP/WebDAV/Tools/_parse_proppatch.php
/usr/share/php/HTTP/WebDAV/Tools/_parse_lockinfo.php
/usr/share/php/HTTP/WebDAV/Tools/_parse_propfind.php
/usr/share/php/HTTP/WebDAV/Server.php
/usr/share/doc/
/usr/share/doc/php-http-webdav-server/
/usr/share/doc/php-http-webdav-server/README
/usr/share/doc/php-http-webdav-server/Fileserver.sql
/usr/share/doc/php-http-webdav-server/copyright
/usr/share/doc/php-http-webdav-server/dav.txt.gz