gfe-relnote: In QUIC, make QUIC_TOO_MANY_OUTSTANDING_SENT_PACKETS connection close detail more informative. Not protected.

PiperOrigin-RevId: 251238003
Change-Id: I13c5bbcff1cf178d55ea98a3ca48f2a858e191a8

quic/core/quic_connection.cc

diff --git a/quic/core/quic_connection.cc b/quic/core/quic_connection.cc
index 35f0752..471c0c9 100644
--- a/quic/core/quic_connection.cc
+++ b/quic/core/quic_connection.cc
@@ -1742,9 +1742,12 @@
           sent_packet_manager_.GetLeastUnacked() + max_tracked_packets_) {
     CloseConnection(
         QUIC_TOO_MANY_OUTSTANDING_SENT_PACKETS,
-        QuicStrCat("More than ", max_tracked_packets_,
-                   " outstanding, least_unacked: ",
-                   sent_packet_manager_.GetLeastUnacked().ToUint64()),
+        QuicStrCat(
+            "More than ", max_tracked_packets_, " outstanding, least_unacked: ",
+            sent_packet_manager_.GetLeastUnacked().ToUint64(),
+            ", packets_processed: ", stats_.packets_processed,
+            ", last_decrypted_packet_level: ",
+            QuicUtils::EncryptionLevelToString(last_decrypted_packet_level_)),
         ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
   }
 }