Added further ability to adjust the filter adaptation in AEC3

Bug: webrtc:8609
Change-Id: I079935bd782afc89146d98fd2248a1c6389871c9
Reviewed-on: https://webrtc-review.googlesource.com/32420
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21268}
diff --git a/modules/audio_processing/include/audio_processing.h b/modules/audio_processing/include/audio_processing.h
index ab9d2cd..28990b8 100644
--- a/modules/audio_processing/include/audio_processing.h
+++ b/modules/audio_processing/include/audio_processing.h
@@ -1165,6 +1165,7 @@
     float shadow_rate = 0.5f;
     float leakage_converged = 0.01f;
     float leakage_diverged = 1.f / 60.f;
+    float error_floor = 0.1f;
     float main_noise_gate = 220075344.f;
     float shadow_noise_gate = 220075344.f;
   } filter;