This is to aid with catching issues whereby a connection object might have a bad reference back to a port object, e.g. inside of an async callback. Bug: webrtc:13892 Change-Id: I56503fedc2865919713b10f236ce023554c68ded Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/257164 Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36394}