/usr/share/php/Horde/ is in php-horde-db 2.3.1-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Horde/Db/
/usr/share/php/Horde/Db.php
/usr/share/php/Horde/Db/Adapter/
/usr/share/php/Horde/Db/Adapter.php
/usr/share/php/Horde/Db/Adapter/Base/
/usr/share/php/Horde/Db/Adapter/Base.php
/usr/share/php/Horde/Db/Adapter/Base/Column.php
/usr/share/php/Horde/Db/Adapter/Base/ColumnDefinition.php
/usr/share/php/Horde/Db/Adapter/Base/Index.php
/usr/share/php/Horde/Db/Adapter/Base/Result.php
/usr/share/php/Horde/Db/Adapter/Base/Schema.php
/usr/share/php/Horde/Db/Adapter/Base/Table.php
/usr/share/php/Horde/Db/Adapter/Base/TableDefinition.php
/usr/share/php/Horde/Db/Adapter/Mysql/
/usr/share/php/Horde/Db/Adapter/Mysql.php
/usr/share/php/Horde/Db/Adapter/Mysql/Column.php
/usr/share/php/Horde/Db/Adapter/Mysql/Result.php
/usr/share/php/Horde/Db/Adapter/Mysql/Schema.php
/usr/share/php/Horde/Db/Adapter/Mysqli/
/usr/share/php/Horde/Db/Adapter/Mysqli.php
/usr/share/php/Horde/Db/Adapter/Mysqli/Result.php
/usr/share/php/Horde/Db/Adapter/Oci8.php
/usr/share/php/Horde/Db/Adapter/Oracle/
/usr/share/php/Horde/Db/Adapter/Oracle/Column.php
/usr/share/php/Horde/Db/Adapter/Oracle/Result.php
/usr/share/php/Horde/Db/Adapter/Oracle/Schema.php
/usr/share/php/Horde/Db/Adapter/Oracle/TableDefinition.php
/usr/share/php/Horde/Db/Adapter/Pdo/
/usr/share/php/Horde/Db/Adapter/Pdo/Base.php
/usr/share/php/Horde/Db/Adapter/Pdo/Mysql.php
/usr/share/php/Horde/Db/Adapter/Pdo/Pgsql.php
/usr/share/php/Horde/Db/Adapter/Pdo/Result.php
/usr/share/php/Horde/Db/Adapter/Pdo/Sqlite.php
/usr/share/php/Horde/Db/Adapter/Postgresql/
/usr/share/php/Horde/Db/Adapter/Postgresql/Column.php
/usr/share/php/Horde/Db/Adapter/Postgresql/Schema.php
/usr/share/php/Horde/Db/Adapter/SplitRead.php
/usr/share/php/Horde/Db/Adapter/Sqlite/
/usr/share/php/Horde/Db/Adapter/Sqlite/Column.php
/usr/share/php/Horde/Db/Adapter/Sqlite/Schema.php
/usr/share/php/Horde/Db/Exception.php
/usr/share/php/Horde/Db/Migration/
/usr/share/php/Horde/Db/Migration/Base.php
/usr/share/php/Horde/Db/Migration/Exception.php
/usr/share/php/Horde/Db/Migration/Migrator.php
/usr/share/php/Horde/Db/SearchParser.php
/usr/share/php/Horde/Db/StatementParser.php
/usr/share/php/Horde/Db/Value/
/usr/share/php/Horde/Db/Value.php
/usr/share/php/Horde/Db/Value/Binary.php
/usr/share/php/Horde/Db/Value/Text.php