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

net/quic/quic_fec_group.h

-// 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.
-//
-// Tracks information about an FEC group, including the packets
-// that have been seen, and the running parity.  Provides the ability
-// to revive a dropped packet.
-
-#ifndef NET_QUIC_QUIC_FEC_GROUP_H_
-#define NET_QUIC_QUIC_FEC_GROUP_H_
-
-#include <cstddef>
-
-#include "base/macros.h"
-#include "base/strings/string_piece.h"
-#include "net/quic/quic_fec_group_interface.h"
-#include "net/quic/quic_protocol.h"
-
-namespace net {
-
-class NET_EXPORT_PRIVATE QuicFecGroup : public QuicFecGroupInterface {
- public:
-  explicit QuicFecGroup(QuicPacketNumber fec_group_number);
-  virtual ~QuicFecGroup();
-
-  // Implementation of QuicFecGroupInterface.
-  bool Update(EncryptionLevel encryption_level,
-              const QuicPacketHeader& header,
-              base::StringPiece decrypted_payload) override;
-  bool UpdateFec(EncryptionLevel encryption_level,
-                 const QuicPacketHeader& header,
-                 base::StringPiece redundancy) override;
-  bool CanRevive() const override;
-  bool IsFinished() const override;
-  size_t Revive(QuicPacketHeader* header,
-                char* decrypted_payload,
-                size_t decrypted_payload_len) override;
-  bool IsWaitingForPacketBefore(QuicPacketNumber num) const override;
-  const base::StringPiece PayloadParity() const override;
-  QuicPacketCount NumReceivedPackets() const override;
-  EncryptionLevel EffectiveEncryptionLevel() const override;
-  QuicFecGroupNumber FecGroupNumber() const override;
-
- private:
-  bool UpdateParity(base::StringPiece payload);
-  // Returns the number of missing packets, or QuicPacketCount max
-  // if the number of missing packets is not known.
-  QuicPacketCount NumMissingPackets() const;
-
-  bool has_received_fec_packet() const {
-    return max_protected_packet_ != kInvalidPacketNumber;
-  }
-
-  // Set of packets that we have recevied.
-  PacketNumberSet received_packets_;
-  // packet number of the first protected packet in this group (the one
-  // with the lowest packet number).  Will only be set once the FEC
-  // packet has been seen.
-  const QuicPacketNumber min_protected_packet_;
-  // packet number of the last protected packet in this group (the one
-  // with the highest packet number).  Will only be set once the FEC
-  // packet has been seen.
-  QuicPacketNumber max_protected_packet_;
-  // The cumulative parity calculation of all received packets.
-  char payload_parity_[kMaxPacketSize];
-  size_t payload_parity_len_;
-  // The effective encryption level, which is the lowest encryption level of
-  // the data and FEC in the group.
-  EncryptionLevel effective_encryption_level_;
-
-  DISALLOW_COPY_AND_ASSIGN(QuicFecGroup);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_FEC_GROUP_H_