Remove NullReceiveStatistics

webrtc/modules/rtp_rtcp/include/receive_statistics.h

 /*
  *  Copyright (c) 2013 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 77 matching lines @@
 
   // Called on new RTP stats creation.
   virtual void RegisterRtpStatisticsCallback(
       StreamDataCountersCallback* callback) = 0;
 
   // TODO(danilchap): Make pure virtual when all implmentations of the
   // ReceiveStatistics interface will implement it.
   std::vector<rtcp::ReportBlock> RtcpReportBlocks(size_t max_blocks) override;
 };
 
-class NullReceiveStatistics : public ReceiveStatistics {
- public:
-  void IncomingPacket(const RTPHeader& rtp_header,
-                      size_t packet_length,
-                      bool retransmitted) override;
-  void FecPacketReceived(const RTPHeader& header,
-                         size_t packet_length) override;
-  StatisticianMap GetActiveStatisticians() const override;
-  StreamStatistician* GetStatistician(uint32_t ssrc) const override;
-  void SetMaxReorderingThreshold(int max_reordering_threshold) override;
-  void RegisterRtcpStatisticsCallback(
-      RtcpStatisticsCallback* callback) override;
-  void RegisterRtpStatisticsCallback(
-      StreamDataCountersCallback* callback) override;
-};
-
 }  // namespace webrtc
 #endif  // WEBRTC_MODULES_RTP_RTCP_INCLUDE_RECEIVE_STATISTICS_H_