Implement MojoAudioRendererSink and use it in UtilityMojoMediaClient

media/mojo/services/mojo_renderer_service.h

Index: media/mojo/services/mojo_renderer_service.h
diff --git a/media/mojo/services/mojo_renderer_service.h b/media/mojo/services/mojo_renderer_service.h
index fca1e58046fcff6b7aaa5c86f1606daaf5361b8b..81c75b463399f4dea9a46db521612e76bd90dc8b 100644
--- a/media/mojo/services/mojo_renderer_service.h
+++ b/media/mojo/services/mojo_renderer_service.h
@@ -19,6 +19,7 @@
 #include "media/base/media_resource.h"
 #include "media/base/pipeline_status.h"
 #include "media/base/renderer_client.h"
+#include "media/mojo/interfaces/audio_renderer_sink.mojom.h"
 #include "media/mojo/interfaces/renderer.mojom.h"
 #include "media/mojo/interfaces/video_renderer_sink.mojom.h"
 #include "media/mojo/services/media_mojo_export.h"
@@ -65,6 +66,7 @@ class MEDIA_MOJO_EXPORT MojoRendererService
   // mojom::Renderer implementation.
   void Initialize(mojom::RendererClientAssociatedPtrInfo client,
                   base::Optional<std::vector<mojom::DemuxerStreamPtr>> streams,
+                  mojom::AudioRendererSinkPtr audio_renderer_sink_ptr,
                   mojom::VideoRendererSinkPtr video_renderer_sink_ptr,
                   const base::Optional<GURL>& media_url,
                   const base::Optional<GURL>& first_party_for_cookies,