Change the null value for packet sequence numbers to

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.  Provided the ability
 // to revive a dropped packet.
 
 #ifndef NET_QUIC_QUIC_FEC_GROUP_H_
 #define NET_QUIC_QUIC_FEC_GROUP_H_
@@ skipping 43 matching lines @@
   bool ProtectsPacketsBefore(QuicPacketSequenceNumber num) const;
 
   const base::StringPiece payload_parity() const {
     return base::StringPiece(payload_parity_, payload_parity_len_);
   }
 
   QuicPacketSequenceNumber min_protected_packet() const {
     return min_protected_packet_;
   }
 
-  size_t NumReceivedPackets() const {
+  QuicPacketCount NumReceivedPackets() const {
     return received_packets_.size();
   }
 
   // Returns the effective encryption level of the FEC group.
   EncryptionLevel effective_encryption_level() const {
     return effective_encryption_level_;
   }
 
  private:
   bool UpdateParity(base::StringPiece payload);
-  // Returns the number of missing packets, or size_t max if the number
-  // of missing packets is not known.
-  size_t NumMissingPackets() const;
+  // Returns the number of missing packets, or QuicPacketCount max
+  // if the number of missing packets is not known.
+  QuicPacketCount NumMissingPackets() const;
 
   // Set of packets that we have recevied.
   SequenceNumberSet received_packets_;
   // Sequence number of the first protected packet in this group (the one
   // with the lowest packet sequence number).  Will only be set once the FEC
   // packet has been seen.
   QuicPacketSequenceNumber min_protected_packet_;
   // Sequence number of the last protected packet in this group (the one
   // with the highest packet sequence number).  Will only be set once the FEC
   // packet has been seen.
   QuicPacketSequenceNumber 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_