/usr/lib/mozilla/chrome/nukeimage is in mozilla-nukeimage 0.3-12.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/mozilla/chrome/../../../share/mozilla-extensions/nukeimage/chrome/nukeimage
/usr/lib/mozilla/chrome/../../../share/mozilla-extensions/nukeimage/chrome/nukeimage