/usr/share/php/FontLib/ is in php-font-lib 0.3.1+dfsg-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/FontLib/Adobe_Font_Metrics.php
/usr/share/php/FontLib/Autoloader.php
/usr/share/php/FontLib/Binary_Stream.php
/usr/share/php/FontLib/EOT/
/usr/share/php/FontLib/EOT/File.php
/usr/share/php/FontLib/EOT/Header.php
/usr/share/php/FontLib/Encoding_Map.php
/usr/share/php/FontLib/Font.php
/usr/share/php/FontLib/Glyph/
/usr/share/php/FontLib/Glyph/Outline.php
/usr/share/php/FontLib/Glyph/Outline_Component.php
/usr/share/php/FontLib/Glyph/Outline_Composite.php
/usr/share/php/FontLib/Glyph/Outline_Simple.php
/usr/share/php/FontLib/Header.php
/usr/share/php/FontLib/OpenType/
/usr/share/php/FontLib/OpenType/File.php
/usr/share/php/FontLib/OpenType/Table_Directory_Entry.php
/usr/share/php/FontLib/Table/
/usr/share/php/FontLib/Table/Directory_Entry.php
/usr/share/php/FontLib/Table/Table.php
/usr/share/php/FontLib/Table/Type/
/usr/share/php/FontLib/Table/Type/cmap.php
/usr/share/php/FontLib/Table/Type/glyf.php
/usr/share/php/FontLib/Table/Type/head.php
/usr/share/php/FontLib/Table/Type/hhea.php
/usr/share/php/FontLib/Table/Type/hmtx.php
/usr/share/php/FontLib/Table/Type/kern.php
/usr/share/php/FontLib/Table/Type/loca.php
/usr/share/php/FontLib/Table/Type/maxp.php
/usr/share/php/FontLib/Table/Type/name.php
/usr/share/php/FontLib/Table/Type/name_Record.php
/usr/share/php/FontLib/Table/Type/os2.php
/usr/share/php/FontLib/Table/Type/post.php
/usr/share/php/FontLib/TrueType/
/usr/share/php/FontLib/TrueType/Collection.php
/usr/share/php/FontLib/TrueType/File.php
/usr/share/php/FontLib/TrueType/Header.php
/usr/share/php/FontLib/TrueType/Table_Directory_Entry.php
/usr/share/php/FontLib/WOFF/
/usr/share/php/FontLib/WOFF/File.php
/usr/share/php/FontLib/WOFF/Header.php
/usr/share/php/FontLib/WOFF/Table_Directory_Entry.php