Re-add RemoteBitrateEstimator::GetStats.

webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.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 20 matching lines @@
 class RemoteBitrateObserver {
  public:
   // Called when a receive channel group has a new bitrate estimate for the
   // incoming streams.
   virtual void OnReceiveBitrateChanged(const std::vector<uint32_t>& ssrcs,
                                        uint32_t bitrate) = 0;
 
   virtual ~RemoteBitrateObserver() {}
 };
 
+// TODO(holmer): Remove when all implementations have been updated.
+struct ReceiveBandwidthEstimatorStats {};
+
 class RemoteBitrateEstimator : public CallStatsObserver, public Module {
  public:
   static const int kDefaultMinBitrateBps = 30000;
   virtual ~RemoteBitrateEstimator() {}
 
   virtual void IncomingPacketFeedbackVector(
       const std::vector<PacketInfo>& packet_feedback_vector) {
     assert(false);
   }
 
   // Called for each incoming packet. Updates the incoming payload bitrate
   // estimate and the over-use detector. If an over-use is detected the
   // remote bitrate estimate will be updated. Note that |payload_size| is the
   // packet size excluding headers.
   // Note that |arrival_time_ms| can be of an arbitrary time base.
   virtual void IncomingPacket(int64_t arrival_time_ms,
                               size_t payload_size,
                               const RTPHeader& header,
                               bool was_paced) = 0;
 
   // Removes all data for |ssrc|.
   virtual void RemoveStream(uint32_t ssrc) = 0;
 
   // Returns true if a valid estimate exists and sets |bitrate_bps| to the
   // estimated payload bitrate in bits per second. |ssrcs| is the list of ssrcs
   // currently being received and of which the bitrate estimate is based upon.
   virtual bool LatestEstimate(std::vector<uint32_t>* ssrcs,
                               uint32_t* bitrate_bps) const = 0;
 
+  // TODO(holmer): Remove when all implementations have been updated.
+  bool GetStats(ReceiveBandwidthEstimatorStats* output) const {
+    return false;
+  }
+
   virtual void SetMinBitrate(int min_bitrate_bps) = 0;
 
  protected:
   static const int64_t kProcessIntervalMs = 500;
   static const int64_t kStreamTimeOutMs = 2000;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_INCLUDE_REMOTE_BITRATE_ESTIMATOR_H_