Update from https://crrev.com/302630

net/quic/quic_connection.h

 // Copyright (c) 2012 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.
 //
 // The entity that handles framing writes for a Quic client or server.
 // Each QuicSession will have a connection associated with it.
 //
 // On the server side, the Dispatcher handles the raw reads, and hands off
 // packets via ProcessUdpPacket for framing and processing.
 //
@@ skipping 239 matching lines @@
                  QuicConnectionHelperInterface* helper,
                  const PacketWriterFactory& writer_factory,
                  bool owns_writer,
                  bool is_server,
                  const QuicVersionVector& supported_versions);
   ~QuicConnection() override;
 
   // Sets connection parameters from the supplied |config|.
   void SetFromConfig(const QuicConfig& config);
 
+  // Sets the number of active streams on the connection for congestion control.
+  void SetNumOpenStreams(size_t num_streams);
+
   // Send the data in |data| to the peer in as few packets as possible.
   // Returns a pair with the number of bytes consumed from data, and a boolean
   // indicating if the fin bit was consumed.  This does not indicate the data
   // has been sent on the wire: it may have been turned into a packet and queued
   // if the socket was unexpectedly blocked. |fec_protection| indicates if
   // data is to be FEC protected. Note that data that is sent immediately
   // following MUST_FEC_PROTECT data may get protected by falling within the
   // same FEC group.
   // If |delegate| is provided, then it will be informed once ACKs have been
   // received for all the packets written in this call.
@@ skipping 95 matching lines @@
   // QuicPacketGenerator::DelegateInterface
   bool ShouldGeneratePacket(TransmissionType transmission_type,
                             HasRetransmittableData retransmittable,
                             IsHandshake handshake) override;
   QuicAckFrame* CreateAckFrame() override;
   QuicCongestionFeedbackFrame* CreateFeedbackFrame() override;
   QuicStopWaitingFrame* CreateStopWaitingFrame() override;
   void OnSerializedPacket(const SerializedPacket& packet) override;
 
   // QuicSentPacketManager::NetworkChangeVisitor
-  void OnCongestionWindowChange(QuicByteCount congestion_window) override;
+  void OnCongestionWindowChange() override;
 
   // Called by the crypto stream when the handshake completes. In the server's
   // case this is when the SHLO has been ACKed. Clients call this on receipt of
   // the SHLO.
   void OnHandshakeComplete();
 
   // Accessors
   void set_visitor(QuicConnectionVisitorInterface* visitor) {
     visitor_ = visitor;
   }
@@ skipping 33 matching lines @@
   // blocked.
   bool CanWriteStreamData();
 
   // Returns true if the connection has queued packets or frames.
   bool HasQueuedData() const;
 
   // TODO(ianswett): Remove when quic_unified_timeouts is removed.
   // Sets (or resets) the idle state connection timeout. Also, checks and times
   // out the connection if network timer has expired for |timeout|.
   void SetIdleNetworkTimeout(QuicTime::Delta timeout);
+
   // Sets (or resets) the total time delta the connection can be alive for.
   // Also, checks and times out the connection if timer has expired for
   // |timeout|. Used to limit the time a connection can be alive before crypto
   // handshake finishes.
   void SetOverallConnectionTimeout(QuicTime::Delta timeout);
 
   // Sets the overall and idle state connection timeouts.
   // Times out the connection if the timeout has been reached and
   // the quic_timeouts_only_from_alarms flag is false.
   void SetNetworkTimeouts(QuicTime::Delta overall_timeout,
@@ skipping 80 matching lines @@
     // an ACK frame is opportunistically bundled with the first
     // outgoing packet.
     ScopedPacketBundler(QuicConnection* connection, AckBundling send_ack);
     ~ScopedPacketBundler();
 
    private:
     QuicConnection* connection_;
     bool already_in_batch_mode_;
   };
 
+  QuicPacketSequenceNumber sequence_number_of_last_sent_packet() const {
+    return sequence_number_of_last_sent_packet_;
+  }
+
  protected:
   // Packets which have not been written to the wire.
   // Owns the QuicPacket* packet.
   struct QueuedPacket {
     QueuedPacket(SerializedPacket packet,
                  EncryptionLevel level);
     QueuedPacket(SerializedPacket packet,
                  EncryptionLevel level,
                  TransmissionType transmission_type,
                  QuicPacketSequenceNumber original_sequence_number);
@@ skipping 20 matching lines @@
   // Selects and updates the version of the protocol being used by selecting a
   // version from |available_versions| which is also supported. Returns true if
   // such a version exists, false otherwise.
   bool SelectMutualVersion(const QuicVersionVector& available_versions);
 
   QuicPacketWriter* writer() { return writer_; }
   const QuicPacketWriter* writer() const { return writer_; }
 
   bool peer_port_changed() const { return peer_port_changed_; }
 
-  QuicPacketSequenceNumber sequence_number_of_last_sent_packet() const {
-    return sequence_number_of_last_sent_packet_;
-  }
-
  private:
   friend class test::QuicConnectionPeer;
   friend class test::PacketSavingConnection;
 
   typedef std::list<QueuedPacket> QueuedPacketList;
   typedef std::map<QuicFecGroupNumber, QuicFecGroup*> FecGroupMap;
 
   // Writes the given packet to socket, encrypted with packet's
   // encryption_level. Returns true on successful write, and false if the writer
   // was blocked and the write needs to be tried again. Notifies the
@@ skipping 88 matching lines @@
   void CheckForAddressMigration(const IPEndPoint& self_address,
                                 const IPEndPoint& peer_address);
 
   HasRetransmittableData IsRetransmittable(const QueuedPacket& packet);
   bool IsConnectionClose(QueuedPacket packet);
 
   QuicFramer framer_;
   QuicConnectionHelperInterface* helper_;  // Not owned.
   QuicPacketWriter* writer_;  // Owned or not depending on |owns_writer_|.
   bool owns_writer_;
+  // Encryption level for new packets. Should only be changed via
+  // SetDefaultEncryptionLevel().
   EncryptionLevel encryption_level_;
+  bool has_forward_secure_encrypter_;
+  // The sequence number of the first packet which will be encrypted with the
+  // foward-secure encrypter, even if the peer has not started sending
+  // forward-secure packets.
+  QuicPacketSequenceNumber first_required_forward_secure_packet_;
   const QuicClock* clock_;
   QuicRandom* random_generator_;
 
   const QuicConnectionId connection_id_;
   // Address on the last successfully processed packet received from the
   // client.
   IPEndPoint self_address_;
   IPEndPoint peer_address_;
   // Used to store latest peer port to possibly migrate to later.
   int migrating_peer_port_;
@@ skipping 136 matching lines @@
   // If non-empty this contains the set of versions received in a
   // version negotiation packet.
   QuicVersionVector server_supported_versions_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_H_