Add logging only ack_frame accessor.

gfe-relnote: n/a (logging only change)
PiperOrigin-RevId: 248533601
Change-Id: I1a72e6caed4c322ede61f4378f42ffbc161d55a7
diff --git a/quic/core/uber_received_packet_manager.h b/quic/core/uber_received_packet_manager.h
index 5c813e2..21c2c0c 100644
--- a/quic/core/uber_received_packet_manager.h
+++ b/quic/core/uber_received_packet_manager.h
@@ -85,6 +85,7 @@
 
   // For logging purposes.
   const QuicAckFrame& ack_frame() const;
+  const QuicAckFrame& GetAckFrame(PacketNumberSpace packet_number_space) const;
 
   void set_max_ack_ranges(size_t max_ack_ranges);