Fix/Add content_unittests to work for the code behind --enable-audio-track-processing

content/renderer/media/media_stream_audio_processor.cc

Index: content/renderer/media/media_stream_audio_processor.cc
diff --git a/content/renderer/media/media_stream_audio_processor.cc b/content/renderer/media/media_stream_audio_processor.cc
index 640ab05dd87655c2f00029eecd439a38263f5802..4c1a2c90ab299c27846cebd1c56e730cc9f0f22a 100644
--- a/content/renderer/media/media_stream_audio_processor.cc
+++ b/content/renderer/media/media_stream_audio_processor.cc
@@ -265,13 +265,8 @@ void MediaStreamAudioProcessor::InitializeAudioProcessingModule(
     const blink::WebMediaConstraints& constraints, int effects,
     MediaStreamType type) {
   DCHECK(!audio_processing_);
-  const std::string group_name =
-      base::FieldTrialList::FindFullName("MediaStreamAudioTrackProcessing");
-  if (!CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableAudioTrackProcessing) &&
-      group_name != "Enabled") {
+  if (!IsAudioTrackProcessingEnabled())
     return;
-  }
 
   RTCMediaConstraints native_constraints(constraints);
 
@@ -492,4 +487,11 @@ void MediaStreamAudioProcessor::StopAudioProcessing() {
   audio_processing_.reset();
 }
 
+bool MediaStreamAudioProcessor::IsAudioTrackProcessingEnabled() const {
+  const std::string group_name =
+      base::FieldTrialList::FindFullName("MediaStreamAudioTrackProcessing");
+  return group_name == "Enabled" || CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kEnableAudioTrackProcessing);
+}
+
 }  // namespace content