Add functionality which limits the number of bytes on the network.

webrtc/modules/remote_bitrate_estimator/include/send_time_history.h

 /*
  *  Copyright (c) 2015 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 20 matching lines @@
 
   // Updates packet info identified by |sequence_number| with |send_time_ms|.
   // Return false if not found.
   bool OnSentPacket(uint16_t sequence_number, int64_t send_time_ms);
 
   // Look up PacketFeedback for a sent packet, based on the sequence number, and
   // populate all fields except for arrival_time. The packet parameter must
   // thus be non-null and have the sequence_number field set.
   bool GetFeedback(PacketFeedback* packet_feedback, bool remove);
 
+  size_t GetOutstandingBytes(uint16_t local_net_id,
+                             uint16_t remote_net_id) const;
+
  private:
   const Clock* const clock_;
   const int64_t packet_age_limit_ms_;
   SequenceNumberUnwrapper seq_num_unwrapper_;
   std::map<int64_t, PacketFeedback> history_;
+  rtc::Optional<int64_t> latest_acked_seq_num_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(SendTimeHistory);
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_SEND_TIME_HISTORY_H_