Pass event log to ANA.

webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc

 /*
  *  Copyright (c) 2016 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.
  */
 
 #include "webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h"
 
 #include <utility>
 
 namespace webrtc {
 
-AudioNetworkAdaptorImpl::Config::Config() = default;
+AudioNetworkAdaptorImpl::Config::Config()
+    : event_log(nullptr), clock(nullptr){};
 
 AudioNetworkAdaptorImpl::Config::~Config() = default;
 
 AudioNetworkAdaptorImpl::AudioNetworkAdaptorImpl(
     const Config& config,
     std::unique_ptr<ControllerManager> controller_manager,
     std::unique_ptr<DebugDumpWriter> debug_dump_writer)
     : config_(config),
       controller_manager_(std::move(controller_manager)),
       debug_dump_writer_(std::move(debug_dump_writer)) {
@@ skipping 55 matching lines @@
   debug_dump_writer_.reset(nullptr);
 }
 
 void AudioNetworkAdaptorImpl::DumpNetworkMetrics() {
   if (debug_dump_writer_)
     debug_dump_writer_->DumpNetworkMetrics(last_metrics_,
                                            config_.clock->TimeInMilliseconds());
 }
 
 }  // namespace webrtc