Use vcm::VideoReceiver on the receive side.

webrtc/modules/video_coding/receiver.cc

 /*
  *  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 24 matching lines @@
                                event_factory,
                                nullptr,  // NackSender
                                nullptr)  // KeyframeRequestSender
 {}
 
 VCMReceiver::VCMReceiver(VCMTiming* timing,
                          Clock* clock,
                          EventFactory* event_factory,
                          NackSender* nack_sender,
                          KeyFrameRequestSender* keyframe_request_sender)
-    : VCMReceiver(timing,
-                  clock,
-                  std::unique_ptr<EventWrapper>(event_factory->CreateEvent()),
-                  std::unique_ptr<EventWrapper>(event_factory->CreateEvent()),
-                  nack_sender,
-                  keyframe_request_sender) {}
+    : VCMReceiver(
+          timing,
+          clock,
+          std::unique_ptr<EventWrapper>(event_factory
+                                            ? event_factory->CreateEvent()
+                                            : EventWrapper::Create()),
+          std::unique_ptr<EventWrapper>(event_factory
+                                            ? event_factory->CreateEvent()
+                                            : EventWrapper::Create()),
+          nack_sender,
+          keyframe_request_sender) {}
 
 VCMReceiver::VCMReceiver(VCMTiming* timing,
                          Clock* clock,
                          std::unique_ptr<EventWrapper> receiver_event,
                          std::unique_ptr<EventWrapper> jitter_buffer_event)
     : VCMReceiver::VCMReceiver(timing,
                                clock,
                                std::move(receiver_event),
                                std::move(jitter_buffer_event),
                                nullptr,  // NackSender
@@ skipping 237 matching lines @@
   uint32_t render_end = timing_->RenderTimeMs(timestamp_end, now_ms);
   return render_end - render_start;
 }
 
 void VCMReceiver::RegisterStatsCallback(
     VCMReceiveStatisticsCallback* callback) {
   jitter_buffer_.RegisterStatsCallback(callback);
 }
 
 }  // namespace webrtc