Move ownership of audio/video sinks to MojoRendererService.

chromecast/browser/media/cast_mojo_media_client.h

Index: chromecast/browser/media/cast_mojo_media_client.h
diff --git a/chromecast/browser/media/cast_mojo_media_client.h b/chromecast/browser/media/cast_mojo_media_client.h
index a84ac3a7a18d544615d20915001b13931a91fd8b..6e288f7473066c19822259abf0a3492f32054f1a 100644
--- a/chromecast/browser/media/cast_mojo_media_client.h
+++ b/chromecast/browser/media/cast_mojo_media_client.h
@@ -21,10 +21,10 @@ class CastMojoMediaClient : public ::media::MojoMediaClient {
   ~CastMojoMediaClient() override;
 
   // MojoMediaClient overrides.
-  std::unique_ptr<::media::Renderer> CreateRenderer(
-      scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
-      scoped_refptr<::media::MediaLog> media_log,
+  scoped_refptr<::media::AudioRendererSink> CreateAudioRendererSink(
       const std::string& audio_device_id) override;
+  std::unique_ptr<::media::RendererFactory> CreateRendererFactory(
+      const scoped_refptr<::media::MediaLog>& media_log) override;
   std::unique_ptr<::media::CdmFactory> CreateCdmFactory(
       ::shell::mojom::InterfaceProvider* interface_provider) override;