tree 064798a83670625c2db13bed310457b622a98fb5
parent 54c319008f9bfcf611598bd06c647631c02809c3
author ericorth <ericorth@google.com> 1785970334 -0700
committer Copybara-Service <copybara-worker@google.com> 1785970380 -0700

QBONE TUN exchanger async refactor: Remove now-defuct StatsInterface visitor

This visitor type is redundant in capabilities with the now-expanded quic::QboneClientPacketExchanger::Visitor.  Silly to have two similar visitor types for the same logic.  If anything wants to track stats, they can do so via Visitor.

Also, very slight change to make Visitor now required, to better replace the was-required StatsInterface.

PiperOrigin-RevId: 959914406