Hook up the experimental ns to APM in chrome.

content/renderer/media/media_stream_audio_processor_options.cc

Index: content/renderer/media/media_stream_audio_processor_options.cc
diff --git a/content/renderer/media/media_stream_audio_processor_options.cc b/content/renderer/media/media_stream_audio_processor_options.cc
index c447404e868f4b9c53eab84dc2737bf795e9295a..0a3eeca2d0e13251a8cab5c1452cdbcde2a78795 100644
--- a/content/renderer/media/media_stream_audio_processor_options.cc
+++ b/content/renderer/media/media_stream_audio_processor_options.cc
@@ -119,6 +119,10 @@ void EnableNoiseSuppression(AudioProcessing* audio_processing) {
   CHECK_EQ(err, 0);
 }
 
+void EnableExperimentalNoiseSuppression(AudioProcessing* audio_processing) {
+  CHECK_EQ(audio_processing->EnableExperimentalNs(true), 0);
+}
+
 void EnableHighPassFilter(AudioProcessing* audio_processing) {
   CHECK_EQ(audio_processing->high_pass_filter()->Enable(true), 0);
 }