Internal QUICHE change

PiperOrigin-RevId: 258424692
Change-Id: Ib710033830b91864bd2f0b87ebb9c46da8a5da64
diff --git a/quic/core/quic_trace_visitor.cc b/quic/core/quic_trace_visitor.cc
index f15e149..42ee003 100644
--- a/quic/core/quic_trace_visitor.cc
+++ b/quic/core/quic_trace_visitor.cc
@@ -225,6 +225,7 @@
 }
 
 void QuicTraceVisitor::OnIncomingAck(
+    QuicPacketNumber /*ack_packet_number*/,
     const QuicAckFrame& ack_frame,
     QuicTime ack_receive_time,
     QuicPacketNumber /*largest_observed*/,