Finalization of the first version of EchoCanceller 3

webrtc/modules/audio_processing/aec3/matched_filter_lag_aggregator.cc

Index: webrtc/modules/audio_processing/aec3/matched_filter_lag_aggregator.cc
diff --git a/webrtc/modules/audio_processing/aec3/matched_filter_lag_aggregator.cc b/webrtc/modules/audio_processing/aec3/matched_filter_lag_aggregator.cc
index d9176efa94fbd76f6d2fbbffa121e7ba2f68e54d..fd5fab160856266ed021a54730b683868d5c4182 100644
--- a/webrtc/modules/audio_processing/aec3/matched_filter_lag_aggregator.cc
+++ b/webrtc/modules/audio_processing/aec3/matched_filter_lag_aggregator.cc
@@ -1,3 +1,4 @@
+
 /*
  *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
  *
@@ -59,7 +60,7 @@ rtc::Optional<size_t> MatchedFilterLagAggregator::Aggregate(
     candidate_ = lag_estimates[best_lag_estimate_index].lag;
   }
 
-  return candidate_counter_ >= 10 ? rtc::Optional<size_t>(candidate_)
+  return candidate_counter_ >= 15 ? rtc::Optional<size_t>(candidate_)
                                   : rtc::Optional<size_t>();
 }