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

net/quic/quic_fec_group_interface.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_INTERFACE_H_
-#define NET_QUIC_QUIC_FEC_GROUP_INTERFACE_H_
-
-#include <stddef.h>
-
-#include "base/macros.h"
-#include "base/strings/string_piece.h"
-#include "net/base/net_export.h"
-#include "net/quic/quic_protocol.h"
-
-namespace net {
-
-class NET_EXPORT_PRIVATE QuicFecGroupInterface {
- public:
-  ~QuicFecGroupInterface() {}
-
-  // Updates the FEC group based on the delivery of a data packet decrypted at
-  // |encryption_level|. Returns false if this packet has already been seen,
-  // true otherwise.
-  virtual bool Update(EncryptionLevel encryption_level,
-                      const QuicPacketHeader& header,
-                      base::StringPiece decrypted_payload) = 0;
-
-  // Updates the FEC group based on the delivery of an FEC packet decrypted at
-  // |encryption_level|. Returns false if this packet has already been seen or
-  // if it does not claim to protect all the packets previously seen in this
-  // group.
-  virtual bool UpdateFec(EncryptionLevel encryption_level,
-                         const QuicPacketHeader& header,
-                         base::StringPiece redundancy) = 0;
-
-  // Returns true if a packet can be revived from this FEC group.
-  virtual bool CanRevive() const = 0;
-
-  // Returns true if all packets (FEC and data) from this FEC group have been
-  // seen or revived.
-  virtual bool IsFinished() const = 0;
-
-  // Revives the missing packet from this FEC group.  This may return a packet
-  // that is null padded to a greater length than the original packet, but
-  // the framer will handle it correctly.  Returns the length of the data
-  // written to |decrypted_payload|, or 0 if the packet could not be revived.
-  virtual size_t Revive(QuicPacketHeader* header,
-                        char* decrypted_payload,
-                        size_t decrypted_payload_len) = 0;
-
-  // Returns true if the group is waiting for any packets with sequence numbers
-  // less than |num|.
-  virtual bool IsWaitingForPacketBefore(QuicPacketNumber num) const = 0;
-
-  // The FEC data in the FEC packet.
-  virtual const base::StringPiece PayloadParity() const = 0;
-
-  // Number of packets in the group.
-  virtual QuicPacketCount NumReceivedPackets() const = 0;
-
-  // Returns the effective encryption level of the FEC group.
-  virtual EncryptionLevel EffectiveEncryptionLevel() const = 0;
-
-  // Return the FEC group number of this group.
-  virtual QuicFecGroupNumber FecGroupNumber() const = 0;
-
-  // An optimized version of running |output| ^= |input|, where ^ is
-  // byte-by-byte XOR and both |output| and |input| are of size |size_in_bytes|.
-  static void XorBuffers(const char* input, size_t size_in_bytes, char* output);
-
- protected:
-  QuicFecGroupInterface() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(QuicFecGroupInterface);
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_FEC_GROUP_INTERFACE_H_