What blocks zero-network on this site: for each third-party origin the views that loaded from it,
ranked by how many views it alone blocks. Pass the views from viewsOf, which joins each page's
loads report to its view. The counts are an upper bound on network requests, since a cross-origin
resource timing entry says nothing about cache hits without Timing-Allow-Origin.
What blocks zero-network on this site: for each third-party origin the views that loaded from it, ranked by how many views it alone blocks. Pass the views from
viewsOf, which joins each page's loads report to its view. The counts are an upper bound on network requests, since a cross-origin resource timing entry says nothing about cache hits withoutTiming-Allow-Origin.