Deprecate FLAGS_quic_always_write_queued_retransmissions.

net/quic/quic_multipath_sent_packet_manager.cc

 #include "net/quic/quic_multipath_sent_packet_manager.h"
 
 #include <cstdint>
 
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/quic_bug_tracker.h"
 
 using std::string;
 using std::max;
 
@@ skipping 66 matching lines @@
     const QuicAckFrame& ack_frame,
     QuicTime ack_receive_time) {
   if (ack_frame.path_id >= path_managers_info_.size() ||
       path_managers_info_[ack_frame.path_id].state != ACTIVE) {
     return;
   }
   path_managers_info_[ack_frame.path_id].manager->OnIncomingAck(
       ack_frame, ack_receive_time);
 }
 
-bool QuicMultipathSentPacketManager::IsUnacked(
-    QuicPathId path_id,
-    QuicPacketNumber packet_number) const {
-  QuicSentPacketManagerInterface* path_manager =
-      MaybeGetSentPacketManagerForPath(path_id);
-  return path_manager != nullptr &&
-         path_manager->IsUnacked(path_id, packet_number);
-}
-
-bool QuicMultipathSentPacketManager::HasRetransmittableFrames(
-    QuicPathId path_id,
-    QuicPacketNumber packet_number) const {
-  QuicSentPacketManagerInterface* path_manager =
-      MaybeGetSentPacketManagerForPath(path_id);
-  return path_manager != nullptr &&
-         path_manager->HasRetransmittableFrames(path_id, packet_number);
-}
-
 void QuicMultipathSentPacketManager::RetransmitUnackedPackets(
     TransmissionType retransmission_type) {
   QuicSentPacketManagerInterface* path_manager =
       MaybeGetSentPacketManagerForActivePath(kDefaultPathId);
   if (path_manager == nullptr) {
     OnUnrecoverablePathError(kDefaultPathId);
     return;
   }
   path_manager->RetransmitUnackedPackets(retransmission_type);
 }
@@ skipping 396 matching lines @@
     return;
   }
   const string error_details =
       "Sent packet manager of path: (" + base::IntToString(path_id) +
       ") must be active but is not.";
   delegate_->OnUnrecoverableError(QUIC_MULTIPATH_PATH_NOT_ACTIVE, error_details,
                                   ConnectionCloseSource::FROM_SELF);
 }
 
 }  // namespace net