/usr/share/php/Horde/ is in php-horde-dav 1.1.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Horde/Dav/
/usr/share/php/Horde/Dav/Auth.php
/usr/share/php/Horde/Dav/Calendar/
/usr/share/php/Horde/Dav/Calendar/Backend.php
/usr/share/php/Horde/Dav/Client.php
/usr/share/php/Horde/Dav/Collection.php
/usr/share/php/Horde/Dav/Contacts/
/usr/share/php/Horde/Dav/Contacts/Backend.php
/usr/share/php/Horde/Dav/Exception.php
/usr/share/php/Horde/Dav/File.php
/usr/share/php/Horde/Dav/Locks.php
/usr/share/php/Horde/Dav/Principals.php
/usr/share/php/Horde/Dav/RootCollection.php
/usr/share/php/Horde/Dav/Storage/
/usr/share/php/Horde/Dav/Storage/Base.php
/usr/share/php/Horde/Dav/Storage/Sql.php
/usr/share/php/Horde/Dav/Translation.php