Notify quicconnectionvisitorinterface when forward progress is made after path degrading.

No flag protection, no-op in the shared code. Chromium QuicChromiumClientSession will override OnForwardProgressMadeAfterPathDegrading to handle differently.

PiperOrigin-RevId: 315999536
Change-Id: Ibc7ac1ca4c8a38cba29b67f5bd366b29d9d85df3
diff --git a/quic/core/quic_session.cc b/quic/core/quic_session.cc
index dcf4962..5043f1f 100644
--- a/quic/core/quic_session.cc
+++ b/quic/core/quic_session.cc
@@ -438,6 +438,8 @@
 
 void QuicSession::OnPathDegrading() {}
 
+void QuicSession::OnForwardProgressMadeAfterPathDegrading() {}
+
 bool QuicSession::AllowSelfAddressChange() const {
   return false;
 }