Change GetLeastUnacked() to return the next packet that could be sent

net/quic/quic_sent_packet_manager.cc

Index: net/quic/quic_sent_packet_manager.cc
diff --git a/net/quic/quic_sent_packet_manager.cc b/net/quic/quic_sent_packet_manager.cc
index a29e69cee9ee28cac28c4b2521dd5052d9093543..a5b1a9d4b71eb2f9525fa0e5c84e7e127f7634fd 100644
--- a/net/quic/quic_sent_packet_manager.cc
+++ b/net/quic/quic_sent_packet_manager.cc
@@ -228,7 +228,7 @@ void QuicSentPacketManager::OnIncomingAck(const QuicAckFrame& ack_frame,
                                    ack_receive_time,
                                    unacked_packets_.largest_observed(),
                                    largest_observed_acked,
-                                   GetLeastUnackedSentPacket());
+                                   GetLeastUnacked());
   }
 }
 
@@ -498,7 +498,7 @@ bool QuicSentPacketManager::HasUnackedPackets() const {
 }
 
 QuicPacketSequenceNumber
-QuicSentPacketManager::GetLeastUnackedSentPacket() const {
+QuicSentPacketManager::GetLeastUnacked() const {
   return unacked_packets_.GetLeastUnacked();
 }