Added a protobuf field for the audio processing module to store the status of experiments

webrtc/modules/audio_processing/test/unpack.cc

Index: webrtc/modules/audio_processing/test/unpack.cc
diff --git a/webrtc/modules/audio_processing/test/unpack.cc b/webrtc/modules/audio_processing/test/unpack.cc
index ec2317867d3b2a837e0d5d7f0cb645abdddd6483..fbb8e85fee7fcbe582f2cc76e2a22df29dd13f49 100644
--- a/webrtc/modules/audio_processing/test/unpack.cc
+++ b/webrtc/modules/audio_processing/test/unpack.cc
@@ -252,6 +252,10 @@ int do_main(int argc, char* argv[]) {
       PRINT_CONFIG(ns_enabled);
       PRINT_CONFIG(ns_level);
       PRINT_CONFIG(transient_suppression_enabled);
+      if (msg.has_experiments_description()) {
+        fprintf(settings_file, "  experiments_description: %s\n",
+                msg.experiments_description().c_str());
+      }
     } else if (event_msg.type() == Event::INIT) {
       if (!event_msg.has_init()) {
         printf("Corrupt input file: Init missing.\n");