Add a new QUIC connection option, 5RTO, which closes the QUIC connection after 5 consecutive RTOs. …

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 8de330bb81acd000d8f6f01eaeab2d5e65e81fd7..3d4fa23e87a3b58085d723d5beceb539d4a84aee 100644
--- a/net/quic/quic_connection.h
+++ b/net/quic/quic_connection.h
@@ -901,6 +901,10 @@ class NET_EXPORT_PRIVATE QuicConnection
   // This is particularly important on mobile, where connections are short.
   bool silent_close_enabled_;
 
+  // When true, close the QUIC connection after 5 RTOs.  Due to the min rto of
+  // 200ms, this is over 5 seconds.
+  bool close_connection_after_five_rtos_;
+
   QuicReceivedPacketManager received_packet_manager_;
   QuicSentEntropyManager sent_entropy_manager_;