Revert of [Chromecast] Process streams with different post-processing.

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
deleted file mode 100644
index f8d639a173343986fbe9d9be3e2bfaccb0b9acc5..0000000000000000000000000000000000000000
--- a/chromecast/media/base/audio_device_ids.h
+++ /dev/null
@@ -1,22 +0,0 @@
-// Copyright 2017 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.
-
-#ifndef CHROMECAST_MEDIA_BASE_AUDIO_DEVICE_IDS_H_
-#define CHROMECAST_MEDIA_BASE_AUDIO_DEVICE_IDS_H_
-
-namespace chromecast {
-namespace media {
-
-extern const char kAlarmAudioDeviceId[];
-extern const char kEarconAudioDeviceId[];
-extern const char kTtsAudioDeviceId[];
-
-const int kDefaultAudioStreamType = 0;
-const int kAlarmAudioStreamType = 1;
-const int kTtsAudioStreamType = 2;
-
-}  // namespace media
-}  // namespace chromecast
-
-#endif  // CHROMECAST_MEDIA_BASE_AUDIO_DEVICE_IDS_H_