/usr/share/php/Symfony/ is in php-symfony-dom-crawler 2.7.10-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/Component/
/usr/share/php/Symfony/Component/DomCrawler/
/usr/share/php/Symfony/Component/DomCrawler/Crawler.php
/usr/share/php/Symfony/Component/DomCrawler/Field/
/usr/share/php/Symfony/Component/DomCrawler/Field/ChoiceFormField.php
/usr/share/php/Symfony/Component/DomCrawler/Field/FileFormField.php
/usr/share/php/Symfony/Component/DomCrawler/Field/FormField.php
/usr/share/php/Symfony/Component/DomCrawler/Field/InputFormField.php
/usr/share/php/Symfony/Component/DomCrawler/Field/TextareaFormField.php
/usr/share/php/Symfony/Component/DomCrawler/Form.php
/usr/share/php/Symfony/Component/DomCrawler/FormFieldRegistry.php
/usr/share/php/Symfony/Component/DomCrawler/Link.php
/usr/share/php/Symfony/Component/DomCrawler/autoload.php