Deprecate FLAGS_quic_always_write_queued_retransmissions.

net/quic/quic_sent_packet_manager.h

 // Copyright 2013 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.
 
 #ifndef NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_
 #define NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 75 matching lines @@
   void SetNumOpenStreams(size_t num_streams) override;
 
   void SetMaxPacingRate(QuicBandwidth max_pacing_rate) override;
 
   void SetHandshakeConfirmed() override;
 
   // Processes the incoming ack.
   void OnIncomingAck(const QuicAckFrame& ack_frame,
                      QuicTime ack_receive_time) override;
 
-  // Returns true if packet |packet_number| is unacked.
-  bool IsUnacked(QuicPathId, QuicPacketNumber packet_number) const override;
-
   // Requests retransmission of all unacked packets of |retransmission_type|.
   // The behavior of this method depends on the value of |retransmission_type|:
   // ALL_UNACKED_RETRANSMISSION - All unacked packets will be retransmitted.
   // This can happen, for example, after a version negotiation packet has been
   // received and all packets needs to be retransmitted with the new version.
   // ALL_INITIAL_RETRANSMISSION - Only initially encrypted packets will be
   // retransmitted. This can happen, for example, when a CHLO has been rejected
   // and the previously encrypted data needs to be encrypted with a new key.
   void RetransmitUnackedPackets(TransmissionType retransmission_type) override;
 
   // Retransmits the oldest pending packet there is still a tail loss probe
   // pending.  Invoked after OnRetransmissionTimeout.
   bool MaybeRetransmitTailLossProbe() override;
 
   // Removes the retransmittable frames from all unencrypted packets to ensure
   // they don't get retransmitted.
   void NeuterUnencryptedPackets() override;
 
-  // Returns true if the unacked packet |packet_number| has retransmittable
-  // frames.  This will only return false if the packet has been acked, if a
-  // previous transmission of this packet was ACK'd, or if this packet has been
-  // retransmitted as with different packet number.
-  bool HasRetransmittableFrames(QuicPathId,
-                                QuicPacketNumber packet_number) const override;
-
   // Returns true if there are pending retransmissions.
   // Not const because retransmissions may be cancelled before returning.
   bool HasPendingRetransmissions() const override;
 
   // Retrieves the next pending retransmission.  You must ensure that
   // there are pending retransmissions prior to calling this function.
   PendingRetransmission NextPendingRetransmission() override;
 
   bool HasUnackedPackets() const override;
 
@@ skipping 269 matching lines @@
   // Records bandwidth from server to client in normal operation, over periods
   // of time with no loss events.
   QuicSustainedBandwidthRecorder sustained_bandwidth_recorder_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSentPacketManager);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_SENT_PACKET_MANAGER_H_