media: scaffolding and plumbing for MojoRenderer{Impl, Service}

media/mojo/services/media_type_converters.h

Index: media/mojo/services/media_type_converters.h
diff --git a/media/mojo/services/media_type_converters.h b/media/mojo/services/media_type_converters.h
index f04e200bdfee333fe862fa2f78ab9c26e9678e78..fba78dcc8d1dbbd7aecf2013a4af474ee6b65b11 100644
--- a/media/mojo/services/media_type_converters.h
+++ b/media/mojo/services/media_type_converters.h
@@ -9,6 +9,7 @@
 #include "media/mojo/interfaces/media_types.mojom.h"
 
 namespace media {
+class AudioDecoderConfig;
 class DecoderBuffer;
 }
 
@@ -27,6 +28,15 @@ struct TypeConverter<scoped_refptr<media::DecoderBuffer>,
       const MediaDecoderBufferPtr& input);
 };
 
+template <>
+struct TypeConverter<AudioDecoderConfigPtr, media::AudioDecoderConfig> {
+  static AudioDecoderConfigPtr Convert(const media::AudioDecoderConfig& input);
+};
+template <>
+struct TypeConverter<media::AudioDecoderConfig, AudioDecoderConfigPtr> {
+  static media::AudioDecoderConfig Convert(const AudioDecoderConfigPtr& input);
+};
+
 }  // namespace mojo
 
 #endif  // MEDIA_MOJO_SERVICES_MEDIA_TYPE_CONVERTERS_H_