Print the QuicReceivedPacketManager's ack frame instead of the

net/quic/core/quic_connection.h

Index: net/quic/core/quic_connection.h
diff --git a/net/quic/core/quic_connection.h b/net/quic/core/quic_connection.h
index 16ef1396f271cd362989b33c04ae9766f48a68d2..497ebd175109139e34a02962f5a360bd34d40035 100644
--- a/net/quic/core/quic_connection.h
+++ b/net/quic/core/quic_connection.h
@@ -686,6 +686,10 @@ class NET_EXPORT_PRIVATE QuicConnection
     return packet_generator_;
   }
 
+  const QuicReceivedPacketManager& received_packet_manager() const {
+    return received_packet_manager_;
+  }
+
   EncryptionLevel encryption_level() const { return encryption_level_; }
 
   const IPEndPoint& last_packet_source_address() const {