/usr/lib/python2.7/dist-packages/zope.contentprovider-3.7.2.egg-info/dependency_links.txt is in python-zope.contentprovider 3.7.2-0ubuntu4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/python2.7/dist-packages/zope.contentprovider-3.7.2.egg-info/../../../../share/pyshared/zope.contentprovider-3.7.2.egg-info/dependency_links.txt