Internal QUICHE change

PiperOrigin-RevId: 282443752
Change-Id: Ifd6e39c3080ef3f6c477d9ae5b9750b4b2588166
diff --git a/quic/core/quic_connection_stats.h b/quic/core/quic_connection_stats.h
index 552e8a6..35bf6cc 100644
--- a/quic/core/quic_connection_stats.h
+++ b/quic/core/quic_connection_stats.h
@@ -113,6 +113,9 @@
   uint64_t num_coalesced_packets_received;
   // Number of successfully processed coalesced packets.
   uint64_t num_coalesced_packets_processed;
+  // Number of ack aggregation epochs. For the same number of bytes acked, the
+  // smaller this value, the more ack aggregation is going on.
+  uint64_t num_ack_aggregation_epochs;
 };
 
 }  // namespace quic