/usr/share/php/ is in php-symfony-debug-bundle 2.7.10-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/php/Symfony/
/usr/share/php/Symfony/Bundle/
/usr/share/php/Symfony/Bundle/DebugBundle/
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/views/
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/views/Profiler/
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/views/Profiler/dump.html.twig
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/config/
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/config/schema/
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/config/schema/debug-1.0.xsd
/usr/share/php/Symfony/Bundle/DebugBundle/Resources/config/services.xml
/usr/share/php/Symfony/Bundle/DebugBundle/DependencyInjection/
/usr/share/php/Symfony/Bundle/DebugBundle/DependencyInjection/Configuration.php
/usr/share/php/Symfony/Bundle/DebugBundle/DependencyInjection/Compiler/
/usr/share/php/Symfony/Bundle/DebugBundle/DependencyInjection/Compiler/DumpDataCollectorPass.php
/usr/share/php/Symfony/Bundle/DebugBundle/DependencyInjection/DebugExtension.php
/usr/share/php/Symfony/Bundle/DebugBundle/autoload.php
/usr/share/php/Symfony/Bundle/DebugBundle/DebugBundle.php