relnote: Allowing multipath support negotiation. Protected by --quic_enable_multipath, default valu…

net/quic/quic_connection.cc

Index: net/quic/quic_connection.cc
diff --git a/net/quic/quic_connection.cc b/net/quic/quic_connection.cc
index 85924614c0f389a1c929d532da7a2489623e4651..162cfe4dbf534afcf79cacc4905e6ed9c889ec5b 100644
--- a/net/quic/quic_connection.cc
+++ b/net/quic/quic_connection.cc
@@ -316,7 +316,8 @@ QuicConnection::QuicConnection(QuicConnectionId connection_id,
       next_mtu_probe_at_(kPacketsBetweenMtuProbesBase),
       largest_received_packet_size_(0),
       goaway_sent_(false),
-      goaway_received_(false) {
+      goaway_received_(false),
+      multipath_enabled_(false) {
   DVLOG(1) << ENDPOINT
            << "Created connection with connection_id: " << connection_id;
   framer_.set_visitor(this);
@@ -359,6 +360,10 @@ void QuicConnection::SetFromConfig(const QuicConfig& config) {
     if (config.SilentClose()) {
       silent_close_enabled_ = true;
     }
+    if (FLAGS_quic_enable_multipath &&
+        config.MultipathEnabled()) {
+      multipath_enabled_ = true;
+    }
   } else {
     SetNetworkTimeouts(config.max_time_before_crypto_handshake(),
                        config.max_idle_time_before_crypto_handshake());