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diff --git a/webrtc/video/vie_sync_module.h b/webrtc/video/vie_sync_module.h
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+++ b/webrtc/video/vie_sync_module.h
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+/*
+ *  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.
+ */
+
+// ViESyncModule is responsible for synchronization audio and video for a given
+// VoE and ViE channel couple.
+
+#ifndef WEBRTC_VIDEO_VIE_SYNC_MODULE_H_
+#define WEBRTC_VIDEO_VIE_SYNC_MODULE_H_
+
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/modules/include/module.h"
+#include "webrtc/system_wrappers/include/tick_util.h"
+#include "webrtc/video/stream_synchronization.h"
+#include "webrtc/voice_engine/include/voe_video_sync.h"
+
+namespace webrtc {
+
+class CriticalSectionWrapper;
+class RtpRtcp;
+class VideoCodingModule;
+class ViEChannel;
+class VoEVideoSync;
+
+class ViESyncModule : public Module {
+ public:
+  explicit ViESyncModule(VideoCodingModule* vcm);
+  ~ViESyncModule();
+
+  int ConfigureSync(int voe_channel_id,
+                    VoEVideoSync* voe_sync_interface,
+                    RtpRtcp* video_rtcp_module,
+                    RtpReceiver* video_receiver);
+
+  int VoiceChannel();
+
+  // Implements Module.
+  int64_t TimeUntilNextProcess() override;
+  int32_t Process() override;
+
+ private:
+  rtc::scoped_ptr<CriticalSectionWrapper> data_cs_;
+  VideoCodingModule* const vcm_;
+  RtpReceiver* video_receiver_;
+  RtpRtcp* video_rtp_rtcp_;
+  int voe_channel_id_;
+  VoEVideoSync* voe_sync_interface_;
+  TickTime last_sync_time_;
+  rtc::scoped_ptr<StreamSynchronization> sync_;
+  StreamSynchronization::Measurements audio_measurement_;
+  StreamSynchronization::Measurements video_measurement_;
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_VIDEO_VIE_SYNC_MODULE_H_