Added the ability to adjust the AEC3 performance for large rooms

webrtc/modules/audio_processing/aec3/echo_remover_metrics_unittest.cc

 /*
  *  Copyright (c) 2017 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 108 matching lines @@
 
   metric = EchoRemoverMetrics::DbMetric(1.f, 2.f, 3.f);
   EXPECT_FLOAT_EQ(1.f, metric.sum_value);
   EXPECT_FLOAT_EQ(2.f, metric.floor_value);
   EXPECT_FLOAT_EQ(3.f, metric.ceil_value);
 }
 
 // Verify the general functionality of EchoRemoverMetrics.
 TEST(EchoRemoverMetrics, NormalUsage) {
   EchoRemoverMetrics metrics;
-  AecState aec_state;
+  AecState aec_state(0.f);
   std::array<float, kFftLengthBy2Plus1> comfort_noise_spectrum;
   std::array<float, kFftLengthBy2Plus1> suppressor_gain;
   comfort_noise_spectrum.fill(10.f);
   suppressor_gain.fill(1.f);
   for (int j = 0; j < 3; ++j) {
     for (int k = 0; k < kMetricsReportingIntervalBlocks - 1; ++k) {
       metrics.Update(aec_state, comfort_noise_spectrum, suppressor_gain);
       EXPECT_FALSE(metrics.MetricsReported());
     }
     metrics.Update(aec_state, comfort_noise_spectrum, suppressor_gain);
     EXPECT_TRUE(metrics.MetricsReported());
   }
 }
 
 }  // namespace webrtc