Rather than passing initial_flow_control_window all the way down the

net/quic/crypto/quic_crypto_server_config.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/crypto/quic_crypto_server_config.h"
 
 #include <stdlib.h>
 #include <algorithm>
 
 #include "base/stl_util.h"
@@ skipping 472 matching lines @@
     done_cb->Run(result);
   }
 }
 
 QuicErrorCode QuicCryptoServerConfig::ProcessClientHello(
     const ValidateClientHelloResultCallback::Result& validate_chlo_result,
     QuicConnectionId connection_id,
     IPEndPoint client_address,
     QuicVersion version,
     const QuicVersionVector& supported_versions,
-    uint32 initial_flow_control_window_bytes,
     const QuicClock* clock,
     QuicRandom* rand,
     QuicCryptoNegotiatedParameters *params,
     CryptoHandshakeMessage* out,
     string* error_details) const {
   DCHECK(error_details);
 
   const CryptoHandshakeMessage& client_hello =
       validate_chlo_result.client_hello;
   const ClientHelloInfo& info = validate_chlo_result.info;
@@ skipping 228 matching lines @@
   out->SetVector(kVER, supported_version_tags);
   out->SetStringPiece(kSourceAddressTokenTag,
                       NewSourceAddressToken(
                           *requested_config,
                           client_address, rand,
                           info.now));
   QuicSocketAddressCoder address_coder(client_address);
   out->SetStringPiece(kCADR, address_coder.Encode());
   out->SetStringPiece(kPUBS, forward_secure_public_value);
 
-  // Set initial receive window for flow control.
-  out->SetValue(kIFCW, initial_flow_control_window_bytes);
-
   return QUIC_NO_ERROR;
 }
 
 scoped_refptr<QuicCryptoServerConfig::Config>
 QuicCryptoServerConfig::GetConfigWithScid(StringPiece requested_scid) const {
   // In Chromium, we will dead lock if the lock is held by the current thread.
   // Chromium doesn't have AssertReaderHeld API call.
   // configs_lock_.AssertReaderHeld();
 
   if (!requested_scid.empty()) {
@@ skipping 649 matching lines @@
 QuicCryptoServerConfig::Config::Config()
     : channel_id_enabled(false),
       is_primary(false),
       primary_time(QuicWallTime::Zero()),
       priority(0),
       source_address_token_boxer(NULL) {}
 
 QuicCryptoServerConfig::Config::~Config() { STLDeleteElements(&key_exchanges); }
 
 }  // namespace net