Remove VoEVideoSync interface.

webrtc/voice_engine/voice_engine_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_VOICE_ENGINE_IMPL_H
 #define WEBRTC_VOICE_ENGINE_VOICE_ENGINE_IMPL_H
 
 #include <memory>
 
 #include "webrtc/system_wrappers/include/atomic32.h"
 #include "webrtc/typedefs.h"
 #include "webrtc/voice_engine/voe_base_impl.h"
 #include "webrtc/voice_engine/voe_audio_processing_impl.h"
 #include "webrtc/voice_engine/voe_codec_impl.h"
 #include "webrtc/voice_engine/voe_file_impl.h"
 #include "webrtc/voice_engine/voe_hardware_impl.h"
 #include "webrtc/voice_engine/voe_neteq_stats_impl.h"
 #include "webrtc/voice_engine/voe_network_impl.h"
 #include "webrtc/voice_engine/voe_rtp_rtcp_impl.h"
-#include "webrtc/voice_engine/voe_video_sync_impl.h"
 #include "webrtc/voice_engine/voe_volume_control_impl.h"
 
 namespace webrtc {
 namespace voe {
 class ChannelProxy;
 }  // namespace voe
 
 class VoiceEngineImpl : public voe::SharedData,  // Must be the first base class
                         public VoiceEngine,
                         public VoEAudioProcessingImpl,
                         public VoECodecImpl,
                         public VoEFileImpl,
                         public VoEHardwareImpl,
                         public VoENetEqStatsImpl,
                         public VoENetworkImpl,
                         public VoERTP_RTCPImpl,
-                        public VoEVideoSyncImpl,
                         public VoEVolumeControlImpl,
                         public VoEBaseImpl {
  public:
   VoiceEngineImpl()
       : SharedData(),
         VoEAudioProcessingImpl(this),
         VoECodecImpl(this),
         VoEFileImpl(this),
         VoEHardwareImpl(this),
         VoENetEqStatsImpl(this),
         VoENetworkImpl(this),
         VoERTP_RTCPImpl(this),
-        VoEVideoSyncImpl(this),
         VoEVolumeControlImpl(this),
         VoEBaseImpl(this),
         _ref_count(0) {}
   ~VoiceEngineImpl() override { assert(_ref_count.Value() == 0); }
 
   int AddRef();
 
   // This implements the Release() method for all the inherited interfaces.
   int Release() override;
 
   // Backdoor to access a voe::Channel object without a channel ID. This is only
   // to be used while refactoring the VoE API!
   virtual std::unique_ptr<voe::ChannelProxy> GetChannelProxy(int channel_id);
 
  // This is *protected* so that FakeVoiceEngine can inherit from the class and
  // manipulate the reference count. See: fake_voice_engine.h.
  protected:
   Atomic32 _ref_count;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VOICE_ENGINE_VOICE_ENGINE_IMPL_H