Add a placeholder stat for logging the estimated residual echo likelihood.

webrtc/media/engine/webrtcvoiceengine_unittest.cc

 /*
  *  Copyright (c) 2008 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 379 matching lines @@
     stats.codec_name = "codec_name_send";
     stats.ext_seqnum = 789;
     stats.jitter_ms = 12;
     stats.rtt_ms = 345;
     stats.audio_level = 678;
     stats.aec_quality_min = 9.01f;
     stats.echo_delay_median_ms = 234;
     stats.echo_delay_std_ms = 567;
     stats.echo_return_loss = 890;
     stats.echo_return_loss_enhancement = 1234;
+    stats.residual_echo_likelihood = 0.432f;
     stats.typing_noise_detected = true;
     return stats;
   }
   void SetAudioSendStreamStats() {
     for (auto* s : call_.GetAudioSendStreams()) {
       s->SetStats(GetAudioSendStreamStats());
     }
   }
   void VerifyVoiceSenderInfo(const cricket::VoiceSenderInfo& info,
                              bool is_sending) {
     const auto stats = GetAudioSendStreamStats();
     EXPECT_EQ(info.ssrc(), stats.local_ssrc);
     EXPECT_EQ(info.bytes_sent, stats.bytes_sent);
     EXPECT_EQ(info.packets_sent, stats.packets_sent);
     EXPECT_EQ(info.packets_lost, stats.packets_lost);
     EXPECT_EQ(info.fraction_lost, stats.fraction_lost);
     EXPECT_EQ(info.codec_name, stats.codec_name);
     EXPECT_EQ(info.ext_seqnum, stats.ext_seqnum);
     EXPECT_EQ(info.jitter_ms, stats.jitter_ms);
     EXPECT_EQ(info.rtt_ms, stats.rtt_ms);
     EXPECT_EQ(info.audio_level, stats.audio_level);
     EXPECT_EQ(info.aec_quality_min, stats.aec_quality_min);
     EXPECT_EQ(info.echo_delay_median_ms, stats.echo_delay_median_ms);
     EXPECT_EQ(info.echo_delay_std_ms, stats.echo_delay_std_ms);
     EXPECT_EQ(info.echo_return_loss, stats.echo_return_loss);
     EXPECT_EQ(info.echo_return_loss_enhancement,
               stats.echo_return_loss_enhancement);
+    EXPECT_EQ(info.residual_echo_likelihood, stats.residual_echo_likelihood);
     EXPECT_EQ(info.typing_noise_detected,
               stats.typing_noise_detected && is_sending);
   }
 
   webrtc::AudioReceiveStream::Stats GetAudioReceiveStreamStats() const {
     webrtc::AudioReceiveStream::Stats stats;
     stats.remote_ssrc = 123;
     stats.bytes_rcvd = 456;
     stats.packets_rcvd = 768;
     stats.packets_lost = 101;
@@ skipping 3079 matching lines @@
       nullptr, webrtc::CreateBuiltinAudioDecoderFactory());
   webrtc::RtcEventLogNullImpl event_log;
   std::unique_ptr<webrtc::Call> call(
       webrtc::Call::Create(webrtc::Call::Config(&event_log)));
   cricket::WebRtcVoiceMediaChannel channel(&engine, cricket::MediaConfig(),
                                            cricket::AudioOptions(), call.get());
   cricket::AudioRecvParameters parameters;
   parameters.codecs = engine.recv_codecs();
   EXPECT_TRUE(channel.SetRecvParameters(parameters));
 }