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

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 <map>
 #include <set>
 #include <utility>
@@ skipping 140 matching lines @@
 
   // Returns true if there are pending retransmissions.
   bool HasPendingRetransmissions() const;
 
   // Retrieves the next pending retransmission.
   PendingRetransmission NextPendingRetransmission();
 
   bool HasUnackedPackets() const;
 
   // Returns the smallest sequence number of a serialized packet which has not
-  // been acked by the peer.  If there are no unacked packets, returns 0.
-  QuicPacketSequenceNumber GetLeastUnackedSentPacket() const;
+  // been acked by the peer.
+  QuicPacketSequenceNumber GetLeastUnacked() const;
 
   // Called when a congestion feedback frame is received from peer.
   virtual void OnIncomingQuicCongestionFeedbackFrame(
       const QuicCongestionFeedbackFrame& frame,
       const QuicTime& feedback_receive_time);
 
   // Called when we have sent bytes to the peer.  This informs the manager both
   // the number of bytes sent and if they were retransmitted.  Returns true if
   // the sender should reset the retransmission timer.
   virtual bool OnPacketSent(QuicPacketSequenceNumber sequence_number,
@@ skipping 217 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_