Remove original_path_id from SerializedPacket and OnPacketSent.

net/quic/core/quic_packets.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/core/quic_packets.h"
 
 #include "net/quic/core/quic_flags.h"
 #include "net/quic/core/quic_utils.h"
 #include "net/quic/core/quic_versions.h"
 #include "net/quic/platform/api/quic_ptr_util.h"
@@ skipping 208 matching lines @@
       encrypted_length(encrypted_length),
       has_crypto_handshake(NOT_HANDSHAKE),
       num_padding_bytes(0),
       path_id(path_id),
       packet_number(packet_number),
       packet_number_length(packet_number_length),
       encryption_level(ENCRYPTION_NONE),
       has_ack(has_ack),
       has_stop_waiting(has_stop_waiting),
       transmission_type(NOT_RETRANSMISSION),
-      original_path_id(kInvalidPathId),
       original_packet_number(0) {}
 
 SerializedPacket::SerializedPacket(const SerializedPacket& other) = default;
 
 SerializedPacket::~SerializedPacket() {}
 
 void ClearSerializedPacket(SerializedPacket* serialized_packet) {
   if (!serialized_packet->retransmittable_frames.empty()) {
     DeleteFrames(&serialized_packet->retransmittable_frames);
   }
   serialized_packet->encrypted_buffer = nullptr;
   serialized_packet->encrypted_length = 0;
 }
 
 char* CopyBuffer(const SerializedPacket& packet) {
   char* dst_buffer = new char[packet.encrypted_length];
   memcpy(dst_buffer, packet.encrypted_buffer, packet.encrypted_length);
   return dst_buffer;
 }
 
 }  // namespace net