Add QUIC 31 in which the server's proof covers both the static server config as well as a hash of t…

net/quic/quic_crypto_client_stream.h

Index: net/quic/quic_crypto_client_stream.h
diff --git a/net/quic/quic_crypto_client_stream.h b/net/quic/quic_crypto_client_stream.h
index 16f0da9efe4e28e57c1d256135b03bd11a167e82..cf0c79a15faab1ca0dc63a6b59b141a0bbc8de61 100644
--- a/net/quic/quic_crypto_client_stream.h
+++ b/net/quic/quic_crypto_client_stream.h
@@ -209,8 +209,9 @@ class NET_EXPORT_PRIVATE QuicCryptoClientStream
 
   QuicCryptoClientConfig* const crypto_config_;
 
-  // Client's connection nonce (4-byte timestamp + 28 random bytes)
-  std::string nonce_;
+  // SHA-256 hash of the most recently sent CHLO.
+  std::string chlo_hash_;
+
   // Server's (hostname, port, is_https, privacy_mode) tuple.
   const QuicServerId server_id_;