Adding debug dump to audio network adaptor.

webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h

 /*
  *  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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_AUDIO_NETWORK_ADAPTOR_IMPL_H_
 #define WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_AUDIO_NETWORK_ADAPTOR_IMPL_H_
 
 #include <memory>
 
 #include "webrtc/base/constructormagic.h"
 #include "webrtc/modules/audio_coding/audio_network_adaptor/controller.h"
 #include "webrtc/modules/audio_coding/audio_network_adaptor/controller_manager.h"
+#include "webrtc/modules/audio_coding/audio_network_adaptor/debug_dump_writer.h"
 #include "webrtc/modules/audio_coding/audio_network_adaptor/include/audio_network_adaptor.h"
+#include "webrtc/system_wrappers/include/clock.h"
 
 namespace webrtc {
 
 class AudioNetworkAdaptorImpl final : public AudioNetworkAdaptor {
  public:
   struct Config {
     Config();
     ~Config();
+    const Clock* clock;
   };
 
   AudioNetworkAdaptorImpl(
       const Config& config,
       std::unique_ptr<ControllerManager> controller_manager);
 
+  // Dependency injection for testing.
+  AudioNetworkAdaptorImpl(
+      const Config& config,
+      std::unique_ptr<ControllerManager> controller_manager,
+      std::unique_ptr<DebugDumpWriter> debug_dump_writer = nullptr);
+
   ~AudioNetworkAdaptorImpl() override;
 
   void SetUplinkBandwidth(int uplink_bandwidth_bps) override;
 
   void SetUplinkPacketLossFraction(float uplink_packet_loss_fraction) override;
 
+  void SetRtt(int rtt_ms) override;
+
   void SetReceiverFrameLengthRange(int min_frame_length_ms,
                                    int max_frame_length_ms) override;
 
   EncoderRuntimeConfig GetEncoderRuntimeConfig() override;
 
   void StartDebugDump(FILE* file_handle) override;
 
+  void StopDebugDump() override;
+
  private:
+  void DumpNetworkMetrics();
+
   const Config config_;
 
   std::unique_ptr<ControllerManager> controller_manager_;
 
+  std::unique_ptr<DebugDumpWriter> debug_dump_writer_;
+
   Controller::NetworkMetrics last_metrics_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(AudioNetworkAdaptorImpl);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_CODING_AUDIO_NETWORK_ADAPTOR_AUDIO_NETWORK_ADAPTOR_IMPL_H_