/usr/share/php/Symfony/Bridge/Doctrine/Form/ is in php-symfony-doctrine-bridge 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o755.
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/usr/share/php/Symfony/Bridge/Doctrine/Form/ChoiceList/
/usr/share/php/Symfony/Bridge/Doctrine/Form/ChoiceList/DoctrineChoiceLoader.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/ChoiceList/EntityLoaderInterface.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/ChoiceList/IdReader.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/ChoiceList/ORMQueryBuilderLoader.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/DataTransformer/
/usr/share/php/Symfony/Bridge/Doctrine/Form/DataTransformer/CollectionToArrayTransformer.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/DoctrineOrmExtension.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/DoctrineOrmTypeGuesser.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/EventListener/
/usr/share/php/Symfony/Bridge/Doctrine/Form/EventListener/MergeDoctrineCollectionListener.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/Type/
/usr/share/php/Symfony/Bridge/Doctrine/Form/Type/DoctrineType.php
/usr/share/php/Symfony/Bridge/Doctrine/Form/Type/EntityType.php