/usr/ is in qtdeclarative5-dialogs-plugin 5.2.1-3ubuntu15.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/qt5/
/usr/lib/x86_64-linux-gnu/qt5/qml/
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/
/usr/share/
/usr/share/doc/
/usr/share/doc/qtdeclarative5-dialogs-plugin/
/usr/share/doc/qtdeclarative5-dialogs-plugin/copyright
/usr/share/lintian/
/usr/share/lintian/overrides/
/usr/share/lintian/overrides/qtdeclarative5-dialogs-plugin
/usr/lib/
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/libdialogplugin.so
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/qmldir
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/plugins.qmltypes
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/Private/
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/Private/qmldir
/usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Dialogs/Private/libdialogsprivateplugin.so
/usr/share/doc/qtdeclarative5-dialogs-plugin/changelog.Debian.gz