Allow the number of undecryptable QUIC packets buffered before the

net/quic/quic_connection.h

Index: net/quic/quic_connection.h
diff --git a/net/quic/quic_connection.h b/net/quic/quic_connection.h
index 3131c2d2075684fe134a57637f4e5ee5ec4bd73c..fa117f8571131be7ae1a30fcd7f4ce05a3f8d856 100644
--- a/net/quic/quic_connection.h
+++ b/net/quic/quic_connection.h
@@ -713,6 +713,9 @@ class NET_EXPORT_PRIVATE QuicConnection
   // sent with the INITIAL encryption and the CHLO message was lost.
   std::deque<QuicEncryptedPacket*> undecryptable_packets_;
 
+  // Maximum number of undecryptable packets the connection will store.
+  size_t max_undecryptable_packets_;
+
   // When the version negotiation packet could not be sent because the socket
   // was not writable, this is set to true.
   bool pending_version_negotiation_packet_;