Deprecate FLAGS_quic_always_write_queued_retransmissions.

net/quic/quic_sent_packet_manager.h

Index: net/quic/quic_sent_packet_manager.h
diff --git a/net/quic/quic_sent_packet_manager.h b/net/quic/quic_sent_packet_manager.h
index b578f599cbb14554ac2f8cabfbfee4b497bb0fc8..02071e1d89c79531051726d9b877544f51c25da1 100644
--- a/net/quic/quic_sent_packet_manager.h
+++ b/net/quic/quic_sent_packet_manager.h
@@ -93,9 +93,6 @@ class NET_EXPORT_PRIVATE QuicSentPacketManager
   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.
@@ -114,13 +111,6 @@ class NET_EXPORT_PRIVATE QuicSentPacketManager
   // 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;