Remove unnecessary methods from QuicUnackedPacketMap and a minor

net/quic/quic_unacked_packet_map.cc

Index: net/quic/quic_unacked_packet_map.cc
diff --git a/net/quic/quic_unacked_packet_map.cc b/net/quic/quic_unacked_packet_map.cc
index d75991ede3eccc745d9e756aa64850a0f3e0c0b3..875c5654cae95b4d29c6500b6f74c8baf4a2e5a0 100644
--- a/net/quic/quic_unacked_packet_map.cc
+++ b/net/quic/quic_unacked_packet_map.cc
@@ -165,13 +165,6 @@ bool QuicUnackedPacketMap::IsUnacked(
   return ContainsKey(unacked_packets_, sequence_number);
 }
 
-bool QuicUnackedPacketMap::IsPending(
-    QuicPacketSequenceNumber sequence_number) const {
-  const TransmissionInfo* transmission_info =
-      FindOrNull(unacked_packets_, sequence_number);
-  return transmission_info != NULL && transmission_info->pending;
-}
-
 void QuicUnackedPacketMap::SetNotPending(
     QuicPacketSequenceNumber sequence_number) {
   UnackedPacketMap::iterator it = unacked_packets_.find(sequence_number);
@@ -286,15 +279,6 @@ QuicUnackedPacketMap::GetLeastUnackedSentPacket() const {
   return unacked_packets_.begin()->first;
 }
 
-SequenceNumberSet QuicUnackedPacketMap::GetUnackedPackets() const {
-  SequenceNumberSet unacked_packets;
-  for (UnackedPacketMap::const_iterator it = unacked_packets_.begin();
-       it != unacked_packets_.end(); ++it) {
-    unacked_packets.insert(it->first);
-  }
-  return unacked_packets;
-}
-
 void QuicUnackedPacketMap::SetSent(QuicPacketSequenceNumber sequence_number,
                                    QuicTime sent_time,
                                    QuicByteCount bytes_sent,