Add IsSupportedAudioConfig in MediaClient

chromecast/media/base/media_codec_support.h

Index: chromecast/media/base/media_codec_support.h
diff --git a/chromecast/media/base/media_codec_support.h b/chromecast/media/base/media_codec_support.h
index ed56ad960ebe991d97df35127811c26e0d036461..cd9eacc7cfa20884a6e0831c99d3cabb77842822 100644
--- a/chromecast/media/base/media_codec_support.h
+++ b/chromecast/media/base/media_codec_support.h
@@ -9,6 +9,7 @@
 
 #include "base/callback.h"
 #include "chromecast/public/media/decoder_config.h"
+#include "media/base/audio_codecs.h"
 #include "media/base/mime_util.h"
 #include "media/base/video_codecs.h"
 
@@ -24,6 +25,10 @@ namespace media {
 // representation of the codec id conforming to RFC 6381) is supported or not.
 ::media::IsCodecSupportedCB GetIsCodecSupportedOnChromecastCB();
 
+// Converts ::media::AudioCodec to chromecast::media::AudioCodec. Any unknown or
+// unsupported codec will be converted to chromecast::media::kCodecUnknown.
+AudioCodec ToCastAudioCodec(const ::media::AudioCodec codec);
+
 // Converts ::media::VideoCodec to chromecast::media::VideoCodec. Any unknown or
 // unsupported codec will be converted to chromecast::media::kCodecUnknown. Note
 // |codec_profile| is ignored for codecs other than Dolby Vision.