[Cast] Clean-up: Merge AudioReceiverConfig+VideoReceiverConfig-->FrameReceiverConfig.

media/cast/audio_receiver/audio_decoder.h

Index: media/cast/audio_receiver/audio_decoder.h
diff --git a/media/cast/audio_receiver/audio_decoder.h b/media/cast/audio_receiver/audio_decoder.h
index d624141f632640f6bc921c9cfa98bc5d08bb2350..a8e264dc94d7d5a52d220d4b022561c8a422acd6 100644
--- a/media/cast/audio_receiver/audio_decoder.h
+++ b/media/cast/audio_receiver/audio_decoder.h
@@ -27,11 +27,11 @@ class AudioDecoder {
                               bool is_continuous)> DecodeFrameCallback;
 
   AudioDecoder(const scoped_refptr<CastEnvironment>& cast_environment,
-               const AudioReceiverConfig& audio_config);
+               const FrameReceiverConfig& audio_config);
   virtual ~AudioDecoder();
 
   // Returns STATUS_AUDIO_INITIALIZED if the decoder was successfully
-  // constructed from the given AudioReceiverConfig.  If this method returns any
+  // constructed from the given FrameReceiverConfig.  If this method returns any
   // other value, calls to DecodeFrame() will not succeed.
   CastInitializationStatus InitializationResult() const;