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

webrtc/modules/audio_processing/test/audioproc_float.cc

Index: webrtc/modules/audio_processing/test/audioproc_float.cc
diff --git a/webrtc/modules/audio_processing/test/audioproc_float.cc b/webrtc/modules/audio_processing/test/audioproc_float.cc
index a91480d2655233e4ed0c3f239ea5e9eff52c7280..ce78eed1e526a0318f81208555f1f77213f50bf0 100644
--- a/webrtc/modules/audio_processing/test/audioproc_float.cc
+++ b/webrtc/modules/audio_processing/test/audioproc_float.cc
@@ -165,6 +165,7 @@ DEFINE_bool(discard_settings_in_aecdump,
 DEFINE_bool(store_intermediate_output,
             false,
             "Creates new output files after each init");
+DEFINE_string(custom_call_order_file, "", "Custom process API call order file");
 
 void SetSettingIfSpecified(const std::string value,
                            rtc::Optional<std::string>* parameter) {
@@ -254,6 +255,8 @@ SimulationSettings CreateSettings() {
   SetSettingIfSpecified(FLAGS_stream_delay, &settings.stream_delay);
   SetSettingIfSpecified(FLAGS_stream_drift_samples,
                         &settings.stream_drift_samples);
+  SetSettingIfSpecified(FLAGS_custom_call_order_file,
+                        &settings.custom_call_order_filename);
   settings.report_performance = FLAGS_performance_report;
   settings.use_verbose_logging = FLAGS_verbose;
   settings.report_bitexactness = FLAGS_bitexactness_report;
@@ -361,6 +364,11 @@ void PerformBasicParameterSanityChecks(const SimulationSettings& settings) {
       "Error: --bitexactness_report can only be used when operating on an "
       "aecdump\n");
 
+  ReportConditionalErrorAndExit(
+      settings.custom_call_order_filename && settings.aec_dump_input_filename,
+      "Error: --custom_call_order_file cannot be used when operating on an "
+      "aecdump\n");
+
   auto valid_wav_name = [](const std::string& wav_file_name) {
     if (wav_file_name.size() < 5) {
       return false;