Implement runtime audio post-processing pipeline. See go/cast_audio.json

chromecast/media/cma/backend/alsa/audio_filter_factory_default.cc

Index: chromecast/media/cma/backend/alsa/audio_filter_factory_default.cc
diff --git a/chromecast/media/cma/backend/alsa/audio_filter_factory_default.cc b/chromecast/media/cma/backend/alsa/audio_filter_factory_default.cc
deleted file mode 100644
index 3333c9a263e72022ebd84dc2629ae7d710a1fef8..0000000000000000000000000000000000000000
--- a/chromecast/media/cma/backend/alsa/audio_filter_factory_default.cc
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright 2016 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 "chromecast/media/cma/backend/alsa/audio_filter_factory.h"
-
-// An AudioFilterFactory that just returns nullptrs
-
-namespace chromecast {
-namespace media {
-
-std::unique_ptr<AudioFilterInterface> AudioFilterFactory::MakeAudioFilter(
-    AudioFilterFactory::FilterType filter_type) {
-  return nullptr;
-}
-
-}  // namespace media
-}  // namespace chromecast