Add mojo interface for audio rendering.

media/base/media_switches.h

Index: media/base/media_switches.h
diff --git a/media/base/media_switches.h b/media/base/media_switches.h
index 781e9270c6d47754ca93599766a5d014a86af65b..6894bdc18e2aa5fb43e4c114b0d4caae0748418b 100644
--- a/media/base/media_switches.h
+++ b/media/base/media_switches.h
@@ -83,14 +83,15 @@ MEDIA_EXPORT extern const base::Feature kD3D11VideoDecoding;
 MEDIA_EXPORT extern const base::Feature kMediaFoundationH264Encoding;
 #endif  // defined(OS_WIN)
 
+MEDIA_EXPORT extern const base::Feature kBackgroundVideoTrackOptimization;
+MEDIA_EXPORT extern const base::Feature kExternalClearKeyForTesting;
 MEDIA_EXPORT extern const base::Feature kNewAudioRenderingMixingStrategy;
 MEDIA_EXPORT extern const base::Feature kOverlayFullscreenVideo;
 MEDIA_EXPORT extern const base::Feature kResumeBackgroundVideo;
 MEDIA_EXPORT extern const base::Feature kUseNewMediaCache;
-MEDIA_EXPORT extern const base::Feature kVideoColorManagement;
 MEDIA_EXPORT extern const base::Feature kVideoBlitColorAccuracy;
-MEDIA_EXPORT extern const base::Feature kExternalClearKeyForTesting;
-MEDIA_EXPORT extern const base::Feature kBackgroundVideoTrackOptimization;
+MEDIA_EXPORT extern const base::Feature kVideoColorManagement;
+MEDIA_EXPORT extern const base::Feature kMojoAudioOutputStreamControl;
 
 #if defined(OS_ANDROID)
 MEDIA_EXPORT extern const base::Feature kAndroidMediaPlayerRenderer;