Remove obsolete fields in quic_protocol and their current usage in QUIC. Reorders QuicAckFrame fie…

net/quic/quic_packet_creator.cc

 // Copyright (c) 2012 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/quic_packet_creator.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 504 matching lines @@
   if (IncludeNonceInPublicHeader()) {
     DCHECK_EQ(Perspective::IS_SERVER, framer_->perspective());
     header->public_header.nonce = &diversification_nonce_;
   } else {
     header->public_header.nonce = nullptr;
   }
   header->path_id = packet_.path_id;
   header->packet_number = ++packet_.packet_number;
   header->public_header.packet_number_length = packet_.packet_number_length;
   header->entropy_flag = random_bool_source_->RandBool();
-  header->is_in_fec_group = NOT_IN_FEC_GROUP;
-  header->fec_group = 0;
 }
 
 bool QuicPacketCreator::ShouldRetransmit(const QuicFrame& frame) {
   switch (frame.type) {
     case ACK_FRAME:
     case PADDING_FRAME:
     case STOP_WAITING_FRAME:
     case MTU_DISCOVERY_FRAME:
       return false;
     default:
@@ skipping 94 matching lines @@
   // Switching path needs to update packet number length.
   UpdatePacketNumberLength(least_packet_awaited_by_peer, max_packets_in_flight);
 }
 
 bool QuicPacketCreator::IncludeNonceInPublicHeader() {
   return have_diversification_nonce_ &&
          packet_.encryption_level == ENCRYPTION_INITIAL;
 }
 
 }  // namespace net