[judge2020]

https://chromium.googlesource.com/chromium/src/+/master/docs...

> Chrome does not perform pin validation when the certificate chain chains up to a private trust anchor. A key result of this policy is that private trust anchors can be used to proxy (or MITM) connections, even to pinned sites.

[jimktrains2]

I was going off remembering this.

> Late on December 24, Chrome detected and blocked an unauthorized digital certificate for the "*.google.com" domain.

https://security.googleblog.com/2013/01/enhancing-digital-ce...

[LocalPCGuy]

Pretty sure chrome has it's own code to detect Google certs and report invalid ones back to Google.