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

net/quic/crypto/crypto_protocol.h

Index: net/quic/crypto/crypto_protocol.h
diff --git a/net/quic/crypto/crypto_protocol.h b/net/quic/crypto/crypto_protocol.h
index a427c6f1d1c35cac70cb40c82eb7bad1a3e13c40..83df44d6b7eeeead4e29c6eac5f587c8e9362ef4 100644
--- a/net/quic/crypto/crypto_protocol.h
+++ b/net/quic/crypto/crypto_protocol.h
@@ -92,6 +92,7 @@ const QuicTag kACKD = TAG('A', 'C', 'K', 'D');   // Ack decimation style acking.
 const QuicTag kAKD2 = TAG('A', 'K', 'D', '2');   // Ack decimation tolerating
                                                  // out of order packets.
 const QuicTag kSSLR = TAG('S', 'S', 'L', 'R');   // Slow Start Large Reduction.
+const QuicTag k5RTO = TAG('5', 'R', 'T', 'O');   // Close connection on 5 RTOs
 
 // Optional support of truncated Connection IDs.  If sent by a peer, the value
 // is the minimum number of bytes allowed for the connection ID sent to the