/usr/share/php/dompdf/include/ is in php-dompdf 0.6.1+dfsg-2ubuntu1.
This file is owned by root:root, with mode 0o755.
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/usr/share/php/dompdf/include/absolute_positioner.cls.php
/usr/share/php/dompdf/include/abstract_renderer.cls.php
/usr/share/php/dompdf/include/attribute_translator.cls.php
/usr/share/php/dompdf/include/autoload.inc.php
/usr/share/php/dompdf/include/block_frame_decorator.cls.php
/usr/share/php/dompdf/include/block_frame_reflower.cls.php
/usr/share/php/dompdf/include/block_positioner.cls.php
/usr/share/php/dompdf/include/block_renderer.cls.php
/usr/share/php/dompdf/include/cached_pdf_decorator.cls.php
/usr/share/php/dompdf/include/canvas.cls.php
/usr/share/php/dompdf/include/canvas_factory.cls.php
/usr/share/php/dompdf/include/cellmap.cls.php
/usr/share/php/dompdf/include/cpdf_adapter.cls.php
/usr/share/php/dompdf/include/css_color.cls.php
/usr/share/php/dompdf/include/dompdf.cls.php
/usr/share/php/dompdf/include/dompdf_exception.cls.php
/usr/share/php/dompdf/include/dompdf_image_exception.cls.php
/usr/share/php/dompdf/include/file.skel
/usr/share/php/dompdf/include/fixed_positioner.cls.php
/usr/share/php/dompdf/include/font_metrics.cls.php
/usr/share/php/dompdf/include/frame.cls.php
/usr/share/php/dompdf/include/frame_decorator.cls.php
/usr/share/php/dompdf/include/frame_factory.cls.php
/usr/share/php/dompdf/include/frame_reflower.cls.php
/usr/share/php/dompdf/include/frame_tree.cls.php
/usr/share/php/dompdf/include/functions.inc.php
/usr/share/php/dompdf/include/gd_adapter.cls.php
/usr/share/php/dompdf/include/image_cache.cls.php
/usr/share/php/dompdf/include/image_frame_decorator.cls.php
/usr/share/php/dompdf/include/image_frame_reflower.cls.php
/usr/share/php/dompdf/include/image_renderer.cls.php
/usr/share/php/dompdf/include/inline_frame_decorator.cls.php
/usr/share/php/dompdf/include/inline_frame_reflower.cls.php
/usr/share/php/dompdf/include/inline_positioner.cls.php
/usr/share/php/dompdf/include/inline_renderer.cls.php
/usr/share/php/dompdf/include/javascript_embedder.cls.php
/usr/share/php/dompdf/include/line_box.cls.php
/usr/share/php/dompdf/include/list_bullet_frame_decorator.cls.php
/usr/share/php/dompdf/include/list_bullet_frame_reflower.cls.php
/usr/share/php/dompdf/include/list_bullet_image_frame_decorator.cls.php
/usr/share/php/dompdf/include/list_bullet_positioner.cls.php
/usr/share/php/dompdf/include/list_bullet_renderer.cls.php
/usr/share/php/dompdf/include/null_frame_decorator.cls.php
/usr/share/php/dompdf/include/null_frame_reflower.cls.php
/usr/share/php/dompdf/include/null_positioner.cls.php
/usr/share/php/dompdf/include/page_cache.cls.php
/usr/share/php/dompdf/include/page_frame_decorator.cls.php
/usr/share/php/dompdf/include/page_frame_reflower.cls.php
/usr/share/php/dompdf/include/pdflib_adapter.cls.php
/usr/share/php/dompdf/include/php_evaluator.cls.php
/usr/share/php/dompdf/include/positioner.cls.php
/usr/share/php/dompdf/include/renderer.cls.php
/usr/share/php/dompdf/include/style.cls.php
/usr/share/php/dompdf/include/stylesheet.cls.php
/usr/share/php/dompdf/include/table_cell_frame_decorator.cls.php
/usr/share/php/dompdf/include/table_cell_frame_reflower.cls.php
/usr/share/php/dompdf/include/table_cell_positioner.cls.php
/usr/share/php/dompdf/include/table_cell_renderer.cls.php
/usr/share/php/dompdf/include/table_frame_decorator.cls.php
/usr/share/php/dompdf/include/table_frame_reflower.cls.php
/usr/share/php/dompdf/include/table_row_frame_decorator.cls.php
/usr/share/php/dompdf/include/table_row_frame_reflower.cls.php
/usr/share/php/dompdf/include/table_row_group_frame_decorator.cls.php
/usr/share/php/dompdf/include/table_row_group_frame_reflower.cls.php
/usr/share/php/dompdf/include/table_row_group_renderer.cls.php
/usr/share/php/dompdf/include/table_row_positioner.cls.php
/usr/share/php/dompdf/include/tcpdf_adapter.cls.php
/usr/share/php/dompdf/include/text_frame_decorator.cls.php
/usr/share/php/dompdf/include/text_frame_reflower.cls.php
/usr/share/php/dompdf/include/text_renderer.cls.php