gfe-relnote: Call QuicSession::OnCryptoHandshakeEvent in TLS handshake. Protected by quic_supports_tls_handshake.

PiperOrigin-RevId: 263264884
Change-Id: Idb9fdcac2b34445bc920dba84a1d24db23da5c42
diff --git a/quic/core/tls_server_handshaker.cc b/quic/core/tls_server_handshaker.cc
index 0f2c0d2..eea6f55 100644
--- a/quic/core/tls_server_handshaker.cc
+++ b/quic/core/tls_server_handshaker.cc
@@ -257,6 +257,7 @@
   session()->NeuterUnencryptedData();
   encryption_established_ = true;
   handshake_confirmed_ = true;
+  session()->OnCryptoHandshakeEvent(QuicSession::HANDSHAKE_CONFIRMED);
 }
 
 ssl_private_key_result_t TlsServerHandshaker::PrivateKeySign(