[Chromecast] Introduce a MediaCapabilitiesShlib::IsSupportedAudioConfig

chromecast/media/cma/backend/cast_media_default.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <memory>
 
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chromecast/base/task_runner_impl.h"
@@ skipping 93 matching lines @@
 bool CastMediaShlib::SupportsMediaClockRateChange() {
   return false;
 }
 
 bool MediaCapabilitiesShlib::IsSupportedVideoConfig(VideoCodec codec,
                                                     VideoProfile profile,
                                                     int level) {
   return (codec == kCodecH264 || codec == kCodecVP8);
 }
 
+bool MediaCapabilitiesShlib::IsSupportedAudioConfig(const AudioConfig& config) {
+  return config.codec == kCodecAAC || config.codec == kCodecMP3 ||
+         config.codec == kCodecPCM;
+}
+
 }  // namespace media
 }  // namespace chromecast