Added functionality for simulating custom orders of the stream API calls in audioproc_f

webrtc/modules/audio_processing/test/audio_processing_simulator.h

Index: webrtc/modules/audio_processing/test/audio_processing_simulator.h
diff --git a/webrtc/modules/audio_processing/test/audio_processing_simulator.h b/webrtc/modules/audio_processing/test/audio_processing_simulator.h
index 7becdb9a6bcb6b64453a1aa41cb4299658879a2b..0cd4bcc853a0d1ee1fdde581278259a4de96b0e7 100644
--- a/webrtc/modules/audio_processing/test/audio_processing_simulator.h
+++ b/webrtc/modules/audio_processing/test/audio_processing_simulator.h
@@ -80,6 +80,7 @@ struct SimulationSettings {
   rtc::Optional<std::string> aec_dump_output_filename;
   bool fixed_interface = false;
   bool store_intermediate_output = false;
+  rtc::Optional<std::string> custom_call_order_filename;
 };
 
 // Holds a few statistics about a series of TickIntervals.