[Cast] Clean-up: Merge RtpReceiver+AudioReceiver+VideoReceiver-->FrameReceiver.

media/cast/receiver/audio_decoder.cc

Index: media/cast/receiver/audio_decoder.cc
diff --git a/media/cast/audio_receiver/audio_decoder.cc b/media/cast/receiver/audio_decoder.cc
similarity index 95%
rename from media/cast/audio_receiver/audio_decoder.cc
rename to media/cast/receiver/audio_decoder.cc
index e4e9a1453eb68d71b96cb90a560de9698e97e874..de6ced56984454ad4949ed84e0e0d3a68157560b 100644
--- a/media/cast/audio_receiver/audio_decoder.cc
+++ b/media/cast/receiver/audio_decoder.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "media/cast/audio_receiver/audio_decoder.h"
+#include "media/cast/receiver/audio_decoder.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ -200,18 +200,16 @@ class AudioDecoder::Pcm16Impl : public AudioDecoder::ImplBase {
 
 AudioDecoder::AudioDecoder(
     const scoped_refptr<CastEnvironment>& cast_environment,
-    const FrameReceiverConfig& audio_config)
+    int channels,
+    int sampling_rate,
+    transport::AudioCodec codec)
     : cast_environment_(cast_environment) {
-  switch (audio_config.codec.audio) {
+  switch (codec) {
     case transport::kOpus:
-      impl_ = new OpusImpl(cast_environment,
-                           audio_config.channels,
-                           audio_config.frequency);
+      impl_ = new OpusImpl(cast_environment, channels, sampling_rate);
       break;
     case transport::kPcm16:
-      impl_ = new Pcm16Impl(cast_environment,
-                            audio_config.channels,
-                            audio_config.frequency);
+      impl_ = new Pcm16Impl(cast_environment, channels, sampling_rate);
       break;
     default:
       NOTREACHED() << "Unknown or unspecified codec.";