[Chromecast] Add new volume control API to CastMediaShlib

chromecast/media/base/audio_device_ids.h

Index: chromecast/media/base/audio_device_ids.h
diff --git a/chromecast/media/base/audio_device_ids.h b/chromecast/media/base/audio_device_ids.h
index f8d639a173343986fbe9d9be3e2bfaccb0b9acc5..845a67931fb416eb135a81213445a69cedfa25af 100644
--- a/chromecast/media/base/audio_device_ids.h
+++ b/chromecast/media/base/audio_device_ids.h
@@ -8,13 +8,14 @@
 namespace chromecast {
 namespace media {
 
+// Local-only audio (don't send over multiroom).
+extern const char kLocalAudioDeviceId[];
+
 extern const char kAlarmAudioDeviceId[];
-extern const char kEarconAudioDeviceId[];
-extern const char kTtsAudioDeviceId[];
 
-const int kDefaultAudioStreamType = 0;
-const int kAlarmAudioStreamType = 1;
-const int kTtsAudioStreamType = 2;
+// TODO(kmackay|bshaya) Remove this, just use
+// ::media::AudioDeviceDescription::kCommunicationsDeviceId.
+extern const char kTtsAudioDeviceId[];
 
 }  // namespace media
 }  // namespace chromecast