Delete a chain of methods in ViE, VoE and ACM

webrtc/voice_engine/voe_video_sync_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.
  */
 
 #ifndef WEBRTC_VOICE_ENGINE_VOE_VIDEO_SYNC_IMPL_H
 #define WEBRTC_VOICE_ENGINE_VOE_VIDEO_SYNC_IMPL_H
 
 #include "webrtc/voice_engine/include/voe_video_sync.h"
 
 #include "webrtc/voice_engine/shared_data.h"
 
 namespace webrtc {
 
 class VoEVideoSyncImpl : public VoEVideoSync {
  public:
   int GetPlayoutBufferSize(int& bufferMs) override;
 
   int SetMinimumPlayoutDelay(int channel, int delayMs) override;
 
-  int SetInitialPlayoutDelay(int channel, int delay_ms) override;
-
   int GetDelayEstimate(int channel,
                        int* jitter_buffer_delay_ms,
                        int* playout_buffer_delay_ms) override;
 
   int GetLeastRequiredDelayMs(int channel) const override;
 
   int SetInitTimestamp(int channel, unsigned int timestamp) override;
 
   int SetInitSequenceNumber(int channel, short sequenceNumber) override;
 
   int GetPlayoutTimestamp(int channel, unsigned int& timestamp) override;
 
   int GetRtpRtcp(int channel,
                  RtpRtcp** rtpRtcpModule,
                  RtpReceiver** rtp_receiver) override;
 
  protected:
   VoEVideoSyncImpl(voe::SharedData* shared);
   ~VoEVideoSyncImpl() override;
 
  private:
   voe::SharedData* _shared;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VOICE_ENGINE_VOE_VIDEO_SYNC_IMPL_H