Replace first_packet_sent_ms_ in Call.

webrtc/modules/pacing/paced_sender.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 101 matching lines @@
                     uint16_t sequence_number,
                     int64_t capture_time_ms,
                     size_t bytes,
                     bool retransmission) override;
 
   // Returns the time since the oldest queued packet was enqueued.
   virtual int64_t QueueInMs() const;
 
   virtual size_t QueueSizePackets() const;
 
+  // Returns the time when the first packet was sent, or -1 if no packet is
+  // sent.
+  virtual int64_t FirstSentPacketTimeMs() const;
+
   // Returns the number of milliseconds it will take to send the current
   // packets in the queue, given the current size and bitrate, ignoring prio.
   virtual int64_t ExpectedQueueTimeMs() const;
 
   // Returns time in milliseconds when the current application-limited region
   // started or empty result if the sender is currently not application-limited.
   //
   // Application Limited Region (ALR) refers to operating in a state where the
   // traffic on network is limited due to application not having enough
   // traffic to meet the current channel capacity.
@@ skipping 45 matching lines @@
   std::unique_ptr<BitrateProber> prober_ GUARDED_BY(critsect_);
   bool probing_send_failure_;
   // Actual configured bitrates (media_budget_ may temporarily be higher in
   // order to meet pace time constraint).
   uint32_t estimated_bitrate_bps_ GUARDED_BY(critsect_);
   uint32_t min_send_bitrate_kbps_ GUARDED_BY(critsect_);
   uint32_t max_padding_bitrate_kbps_ GUARDED_BY(critsect_);
   uint32_t pacing_bitrate_kbps_ GUARDED_BY(critsect_);
 
   int64_t time_last_update_us_ GUARDED_BY(critsect_);
+  int64_t first_sent_packet_ms_ GUARDED_BY(critsect_);
 
   std::unique_ptr<paced_sender::PacketQueue> packets_ GUARDED_BY(critsect_);
   uint64_t packet_counter_;
   ProcessThread* process_thread_ = nullptr;
 };
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_PACING_PACED_SENDER_H_