Further utilizing the AEC3 config struct for constants

webrtc/modules/audio_processing/aec3/matched_filter.h

Index: webrtc/modules/audio_processing/aec3/matched_filter.h
diff --git a/webrtc/modules/audio_processing/aec3/matched_filter.h b/webrtc/modules/audio_processing/aec3/matched_filter.h
index fd20625594d64cec2bf5e51372cbae2ce0ee4a67..0702a124e8cf148737e9619ba9e06d31ea9ad0de 100644
--- a/webrtc/modules/audio_processing/aec3/matched_filter.h
+++ b/webrtc/modules/audio_processing/aec3/matched_filter.h
@@ -83,7 +83,8 @@ class MatchedFilter {
                 Aec3Optimization optimization,
                 size_t window_size_sub_blocks,
                 int num_matched_filters,
-                size_t alignment_shift_sub_blocks);
+                size_t alignment_shift_sub_blocks,
+                float excitation_limit);
 
   ~MatchedFilter();
 
@@ -108,6 +109,7 @@ class MatchedFilter {
   const size_t filter_intra_lag_shift_;
   std::vector<std::vector<float>> filters_;
   std::vector<LagEstimate> lag_estimates_;
+  const float excitation_limit_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(MatchedFilter);
 };