/usr/share/icons/ is in gnome-packagekit-data 3.8.2-4ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/icons/hicolor/
/usr/share/icons/hicolor/16x16/
/usr/share/icons/hicolor/16x16/apps/
/usr/share/icons/hicolor/16x16/mimetypes/
/usr/share/icons/hicolor/24x24/
/usr/share/icons/hicolor/24x24/apps/
/usr/share/icons/hicolor/24x24/mimetypes/
/usr/share/icons/hicolor/scalable/
/usr/share/icons/hicolor/scalable/apps/
/usr/share/icons/hicolor/48x48/apps/
/usr/share/icons/hicolor/48x48/mimetypes/
/usr/share/icons/hicolor/22x22/
/usr/share/icons/hicolor/22x22/apps/
/usr/share/icons/hicolor/22x22/mimetypes/
/usr/share/icons/hicolor/scalable/mimetypes/
/usr/share/icons/hicolor/48x48/
/usr/share/icons/hicolor/16x16/apps/gpk-repo.png
/usr/share/icons/hicolor/16x16/apps/gpk-prefs.png
/usr/share/icons/hicolor/16x16/apps/gpk-service-pack.png
/usr/share/icons/hicolor/16x16/apps/gpk-log.png
/usr/share/icons/hicolor/16x16/mimetypes/application-x-catalog.png
/usr/share/icons/hicolor/16x16/mimetypes/application-x-package-list.png
/usr/share/icons/hicolor/16x16/mimetypes/application-x-servicepack.png
/usr/share/icons/hicolor/24x24/apps/gpk-repo.png
/usr/share/icons/hicolor/24x24/apps/gpk-prefs.png
/usr/share/icons/hicolor/24x24/apps/gpk-service-pack.png
/usr/share/icons/hicolor/24x24/apps/gpk-log.png
/usr/share/icons/hicolor/24x24/mimetypes/application-x-catalog.png
/usr/share/icons/hicolor/24x24/mimetypes/application-x-package-list.png
/usr/share/icons/hicolor/24x24/mimetypes/application-x-servicepack.png
/usr/share/icons/hicolor/scalable/apps/gpk-repo.svg
/usr/share/icons/hicolor/scalable/apps/gpk-log.svg
/usr/share/icons/hicolor/scalable/apps/gpk-service-pack.svg
/usr/share/icons/hicolor/scalable/apps/gpk-prefs.svg
/usr/share/icons/hicolor/scalable/mimetypes/application-x-catalog.svg
/usr/share/icons/hicolor/scalable/mimetypes/application-x-servicepack.svg
/usr/share/icons/hicolor/scalable/mimetypes/application-x-package-list.svg
/usr/share/icons/hicolor/48x48/apps/gpk-repo.png
/usr/share/icons/hicolor/48x48/apps/gpk-prefs.png
/usr/share/icons/hicolor/48x48/apps/gpk-service-pack.png
/usr/share/icons/hicolor/48x48/apps/gpk-log.png
/usr/share/icons/hicolor/48x48/mimetypes/application-x-catalog.png
/usr/share/icons/hicolor/48x48/mimetypes/application-x-package-list.png
/usr/share/icons/hicolor/48x48/mimetypes/application-x-servicepack.png
/usr/share/icons/hicolor/22x22/apps/gpk-repo.png
/usr/share/icons/hicolor/22x22/apps/gpk-prefs.png
/usr/share/icons/hicolor/22x22/apps/gpk-service-pack.png
/usr/share/icons/hicolor/22x22/apps/gpk-log.png
/usr/share/icons/hicolor/22x22/mimetypes/application-x-catalog.png
/usr/share/icons/hicolor/22x22/mimetypes/application-x-package-list.png
/usr/share/icons/hicolor/22x22/mimetypes/application-x-servicepack.png