/usr/share/gnome-shell/extensions/ is in gnome-shell-extension-trash 0.2.0-git20161122.ad29112-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/extension.js
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/locale/
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/locale/de/
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/locale/de/LC_MESSAGES/
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/locale/de/LC_MESSAGES/gnome-shell-trash-extension.mo
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/locale/fr/
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/locale/fr/LC_MESSAGES/
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/locale/fr/LC_MESSAGES/gnome-shell-trash-extension.mo
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/metadata.json
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/po/
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/po/de.po
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/po/fr.po
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/po/messages.pot
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/po/pt_BR.po
/usr/share/gnome-shell/extensions/gnome-shell-trash-extension/stylesheet.css