Record the last packet send time before we start sending the packet

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 765 matching lines @@
   // Overall connection timeout.
   QuicTime::Delta overall_connection_timeout_;
 
   // Statistics for this session.
   QuicConnectionStats stats_;
 
   // The time that we got a packet for this connection.
   // This is used for timeouts, and does not indicate the packet was processed.
   QuicTime time_of_last_received_packet_;
 
-  // The last time a new (non-retransmitted) packet was sent for this
-  // connection.
+  // The last time this connection began sending a new (non-retransmitted)
+  // packet.
   QuicTime time_of_last_sent_new_packet_;
 
   // Sequence number of the last sent packet.  Packets are guaranteed to be sent
   // in sequence number order.
   QuicPacketSequenceNumber sequence_number_of_last_sent_packet_;
 
   // Sent packet manager which tracks the status of packets sent by this
   // connection and contains the send and receive algorithms to determine when
   // to send packets.
   QuicSentPacketManager sent_packet_manager_;
@@ skipping 34 matching lines @@
 
   // True if this is a secure QUIC connection.
   bool is_secure_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicConnection);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_CONNECTION_H_