/usr/share/horde/ is in php-horde-content 2.0.5-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/horde/content/
/usr/share/horde/content/.htaccess
/usr/share/horde/content/app/
/usr/share/horde/content/app/controllers/
/usr/share/horde/content/app/controllers/ApplicationController.php
/usr/share/horde/content/app/controllers/TagController.php
/usr/share/horde/content/app/views/
/usr/share/horde/content/app/views/Tag/
/usr/share/horde/content/app/views/Tag/recentTags.html.php
/usr/share/horde/content/app/views/Tag/searchTags.html.php
/usr/share/horde/content/config
/usr/share/horde/content/lib/
/usr/share/horde/content/lib/Application.php
/usr/share/horde/content/lib/Exception.php
/usr/share/horde/content/lib/Indexer.php
/usr/share/horde/content/lib/Linkbacks/
/usr/share/horde/content/lib/Linkbacks/Linkback.php
/usr/share/horde/content/lib/Linkbacks/LinkbackMapper.php
/usr/share/horde/content/lib/ObjectMapper.php
/usr/share/horde/content/lib/Objects/
/usr/share/horde/content/lib/Objects/Manager.php
/usr/share/horde/content/lib/Objects/Object.php
/usr/share/horde/content/lib/Relationships/
/usr/share/horde/content/lib/Relationships/Relationship.php
/usr/share/horde/content/lib/Relationships/RelationshipMapper.php
/usr/share/horde/content/lib/Tagger.php
/usr/share/horde/content/lib/Tags/
/usr/share/horde/content/lib/Tags/Tag.php
/usr/share/horde/content/lib/Tags/TagMapper.php
/usr/share/horde/content/lib/Types/
/usr/share/horde/content/lib/Types/Manager.php
/usr/share/horde/content/lib/Users/
/usr/share/horde/content/lib/Users/Manager.php
/usr/share/horde/content/migration/
/usr/share/horde/content/migration/1_rampage_base_tables.php
/usr/share/horde/content/migration/2_rampage_tag_tables.php