Add a new QUIC Ack Decimation mode that is reordering tolerant. Protected by FLAG_quic_ack_decimati…

net/quic/quic_received_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.
 //
 // Manages the packet entropy calculation for both sent and received packets
 // for a connection.
 
 #ifndef NET_QUIC_QUIC_RECEIVED_PACKET_MANAGER_H_
 #define NET_QUIC_QUIC_RECEIVED_PACKET_MANAGER_H_
 
@@ skipping 113 matching lines @@
   // QuicReceivedEntropyHashCalculatorInterface
   // Called by QuicFramer, when the outgoing ack gets truncated, to recalculate
   // the received entropy hash for the truncated ack frame.
   QuicPacketEntropyHash EntropyHash(
       QuicPacketNumber packet_number) const override;
 
   // Updates internal state based on |stop_waiting|.
   virtual void UpdatePacketInformationSentByPeer(
       const QuicStopWaitingFrame& stop_waiting);
 
+  // Returns true if there are any missing packets.
+  bool HasMissingPackets() const;
+
   // Returns true when there are new missing packets to be reported within 3
   // packets of the largest observed.
   virtual bool HasNewMissingPackets() const;
 
   // Returns the number of packets being tracked in the EntropyTracker.
   size_t NumTrackedPackets() const;
 
   QuicPacketNumber peer_least_packet_awaiting_ack() {
     return peer_least_packet_awaiting_ack_;
   }
@@ skipping 33 matching lines @@
   QuicTime time_largest_observed_;
 
   QuicConnectionStats* stats_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicReceivedPacketManager);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_RECEIVED_PACKET_MANAGER_H_