Add a QUIC connection option(BWMX) to resume to the max bandwidth

net/quic/quic_server_session.cc

Index: net/quic/quic_server_session.cc
diff --git a/net/quic/quic_server_session.cc b/net/quic/quic_server_session.cc
index acd5ceb10848fc68821baa6c4e68c448a43dba89..4545b08768b2a2bc330bdf0421fddcdcaccc5d2b 100644
--- a/net/quic/quic_server_session.cc
+++ b/net/quic/quic_server_session.cc
@@ -47,10 +47,14 @@ void QuicServerSession::OnConfigNegotiated() {
   // bandwidth resumption.
   const CachedNetworkParameters* cached_network_params =
       crypto_stream_->previous_cached_network_params();
+  const bool max_bandwidth_resumption =
+      ContainsQuicTag(config()->ReceivedConnectionOptions(), kBWMX);
   if (cached_network_params != nullptr &&
-      ContainsQuicTag(config()->ReceivedConnectionOptions(), kBWRE) &&
+      (ContainsQuicTag(config()->ReceivedConnectionOptions(), kBWRE) ||
+       max_bandwidth_resumption) &&
       cached_network_params->serving_region() == serving_region_) {
-    connection()->ResumeConnectionState(*cached_network_params);
+    connection()->ResumeConnectionState(*cached_network_params,
+                                        max_bandwidth_resumption);
   }
 
   if (FLAGS_enable_quic_fec &&