ANSSI is not just a "French certificate authority". It's a government defence agency.

http://www.ssi.gouv.fr/fr/anssi/presentation/ "The agency is attached to the secretary general of defence and national security".

What is the CA hierarchy "linking back to ANSSI" that chrome is/was trusting? Is the root of that hierarchy still trusted by chrome?

Edit: following link from seszett's post below, hierarchy is at: http://www.ssi.gouv.fr/fr/anssi/services-securises/igc-a/ and the IGC/A certificate is under PM/SGDN in Chrome's authority store.