Add class QuicMultipathReceivedPacketManager (not in use currently).

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 84 matching lines @@
     DISALLOW_COPY_AND_ASSIGN(EntropyTracker);
   };
 
   explicit QuicReceivedPacketManager(QuicConnectionStats* stats);
   ~QuicReceivedPacketManager() override;
 
   // Updates the internal state concerning which packets have been received.
   // bytes: the packet size in bytes including Quic Headers.
   // header: the packet header.
   // timestamp: the arrival time of the packet.
-  void RecordPacketReceived(QuicByteCount bytes,
-                            const QuicPacketHeader& header,
-                            QuicTime receipt_time);
+  virtual void RecordPacketReceived(QuicByteCount bytes,
+                                    const QuicPacketHeader& header,
+                                    QuicTime receipt_time);
 
-  void RecordPacketRevived(QuicPacketNumber packet_number);
+  virtual void RecordPacketRevived(QuicPacketNumber packet_number);
 
   // Checks whether |packet_number| is missing and less than largest observed.
-  bool IsMissing(QuicPacketNumber packet_number);
+  virtual bool IsMissing(QuicPacketNumber packet_number);
 
   // Checks if we're still waiting for the packet with |packet_number|.
-  bool IsAwaitingPacket(QuicPacketNumber packet_number);
+  virtual bool IsAwaitingPacket(QuicPacketNumber packet_number);
 
   // Update the |ack_frame| for an outgoing ack.
   void UpdateReceivedPacketInfo(QuicAckFrame* ack_frame,
                                 QuicTime approximate_now);
 
   // 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|.
-  void UpdatePacketInformationSentByPeer(
+  virtual void UpdatePacketInformationSentByPeer(
       const QuicStopWaitingFrame& stop_waiting);
 
   // Returns true when there are new missing packets to be reported within 3
   // packets of the largest observed.
-  bool HasNewMissingPackets() const;
+  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_;
   }
 
-  bool ack_frame_updated() const { return ack_frame_updated_; }
+  virtual bool ack_frame_updated() const;
 
  private:
   friend class test::QuicConnectionPeer;
   friend class test::QuicReceivedPacketManagerPeer;
 
   // Deletes all missing packets before least unacked. The connection won't
   // process any packets with packet number before |least_unacked| that it
   // received after this call. Returns true if there were missing packets before
   // |least_unacked| unacked, false otherwise.
   bool DontWaitForPacketsBefore(QuicPacketNumber least_unacked);
@@ skipping 18 matching lines @@
   QuicTime time_largest_observed_;
 
   QuicConnectionStats* stats_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicReceivedPacketManager);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_RECEIVED_PACKET_MANAGER_H_