Update from https://crrev.com/304418

net/quic/quic_config.cc

Index: net/quic/quic_config.cc
diff --git a/net/quic/quic_config.cc b/net/quic/quic_config.cc
index b1b73430603d5ebc27ac627d585e034bdfe9f895..622cf3fd75ead3189e3427d8e31f4ae5295e312d 100644
--- a/net/quic/quic_config.cc
+++ b/net/quic/quic_config.cc
@@ -434,7 +434,6 @@ QuicConfig::QuicConfig()
       keepalive_timeout_seconds_(kKATO, PRESENCE_OPTIONAL),
       max_streams_per_connection_(kMSPC, PRESENCE_REQUIRED),
       bytes_for_connection_id_(kTCID, PRESENCE_OPTIONAL),
-      initial_congestion_window_(kSWND, PRESENCE_OPTIONAL),
       initial_round_trip_time_us_(kIRTT, PRESENCE_OPTIONAL),
       // TODO(rjshade): Remove this when retiring QUIC_VERSION_19.
       initial_flow_control_window_bytes_(kIFCW, PRESENCE_OPTIONAL),
@@ -524,18 +523,6 @@ uint32 QuicConfig::ReceivedBytesForConnectionId() const {
   return bytes_for_connection_id_.GetReceivedValue();
 }
 
-void QuicConfig::SetInitialCongestionWindowToSend(size_t initial_window) {
-  initial_congestion_window_.SetSendValue(initial_window);
-}
-
-bool QuicConfig::HasReceivedInitialCongestionWindow() const {
-  return initial_congestion_window_.HasReceivedValue();
-}
-
-uint32 QuicConfig::ReceivedInitialCongestionWindow() const {
-  return initial_congestion_window_.GetReceivedValue();
-}
-
 void QuicConfig::SetInitialRoundTripTimeUsToSend(size_t rtt) {
   initial_round_trip_time_us_.SetSendValue(rtt);
 }
@@ -675,7 +662,6 @@ void QuicConfig::ToHandshakeMessage(CryptoHandshakeMessage* out) const {
   keepalive_timeout_seconds_.ToHandshakeMessage(out);
   max_streams_per_connection_.ToHandshakeMessage(out);
   bytes_for_connection_id_.ToHandshakeMessage(out);
-  initial_congestion_window_.ToHandshakeMessage(out);
   initial_round_trip_time_us_.ToHandshakeMessage(out);
   initial_flow_control_window_bytes_.ToHandshakeMessage(out);
   initial_stream_flow_control_window_bytes_.ToHandshakeMessage(out);
@@ -712,10 +698,6 @@ QuicErrorCode QuicConfig::ProcessPeerHello(
         peer_hello, hello_type, error_details);
   }
   if (error == QUIC_NO_ERROR) {
-    error = initial_congestion_window_.ProcessPeerHello(
-        peer_hello, hello_type, error_details);
-  }
-  if (error == QUIC_NO_ERROR) {
     error = initial_round_trip_time_us_.ProcessPeerHello(
         peer_hello, hello_type, error_details);
   }