Make QUIC stateless rejects work in the face of packet loss by storing the SREJ packet(s) in the Qu…

net/quic/quic_crypto_server_stream.cc

Index: net/quic/quic_crypto_server_stream.cc
diff --git a/net/quic/quic_crypto_server_stream.cc b/net/quic/quic_crypto_server_stream.cc
index d4758336d2da478e4cb11fb1742cd791eb2890d8..eb6629fa6f845de526e6f41e2fc155c58dab3ba6 100644
--- a/net/quic/quic_crypto_server_stream.cc
+++ b/net/quic/quic_crypto_server_stream.cc
@@ -108,6 +108,13 @@ void QuicCryptoServerStream::FinishProcessingHandshakeMessage(
   }
 
   if (reply.tag() != kSHLO) {
+    if (FLAGS_enable_quic_stateless_reject_support &&
+        reply.tag() == kSREJ) {
+      // Before sending the SREJ, cause the connection to save crypto packets
+      // so that they can be added to the time wait list manager and
+      // retransmitted.
+      session()->connection()->EnableSavingCryptoPackets();
+    }
     SendHandshakeMessage(reply);
 
     if (FLAGS_enable_quic_stateless_reject_support && reply.tag() == kSREJ) {