Remove the unused and untested functions from VoERTP_RTCP.

webrtc/voice_engine/voe_rtp_rtcp_impl.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 10 matching lines @@
  public:
   // RTCP
   int SetRTCPStatus(int channel, bool enable) override;
 
   int GetRTCPStatus(int channel, bool& enabled) override;
 
   int SetRTCP_CNAME(int channel, const char cName[256]) override;
 
   int GetRemoteRTCP_CNAME(int channel, char cName[256]) override;
 
-  int GetRemoteRTCPData(int channel,
-                        unsigned int& NTPHigh,
-                        unsigned int& NTPLow,
-                        unsigned int& timestamp,
-                        unsigned int& playoutTimestamp,
-                        unsigned int* jitter = NULL,
-                        unsigned short* fractionLost = NULL) override;
-
   // SSRC
   int SetLocalSSRC(int channel, unsigned int ssrc) override;
 
   int GetLocalSSRC(int channel, unsigned int& ssrc) override;
 
   int GetRemoteSSRC(int channel, unsigned int& ssrc) override;
 
   // RTP Header Extension for Client-to-Mixer Audio Level Indication
   int SetSendAudioLevelIndicationStatus(int channel,
                                         bool enable,
                                         unsigned char id) override;
-  int SetReceiveAudioLevelIndicationStatus(int channel,
-                                           bool enable,
-                                           unsigned char id) override;
-
-  // Statistics
-  int GetRTPStatistics(int channel,
-                       unsigned int& averageJitterMs,
-                       unsigned int& maxJitterMs,
-                       unsigned int& discardedPackets) override;
 
   int GetRTCPStatistics(int channel, CallStatistics& stats) override;
 
-  int GetRemoteRTCPReportBlocks(
-      int channel,
-      std::vector<ReportBlock>* report_blocks) override;
-
-  // NACK
-  int SetNACKStatus(int channel, bool enable, int maxNoPackets) override;
-
  protected:
   VoERTP_RTCPImpl(voe::SharedData* shared);
   ~VoERTP_RTCPImpl() override;
 
  private:
   voe::SharedData* _shared;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VOICE_ENGINE_VOE_RTP_RTCP_IMPL_H