Delete the audio modem and copresence private APIs.

components/audio_modem/public/audio_modem_types.h

Index: components/audio_modem/public/audio_modem_types.h
diff --git a/components/audio_modem/public/audio_modem_types.h b/components/audio_modem/public/audio_modem_types.h
deleted file mode 100644
index 3ccf6888f04e9ee7d963d0c5c23cabc2da437f2e..0000000000000000000000000000000000000000
--- a/components/audio_modem/public/audio_modem_types.h
+++ /dev/null
@@ -1,75 +0,0 @@
-// 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.
-
-#ifndef COMPONENTS_AUDIO_MODEM_PUBLIC_AUDIO_MODEM_TYPES_H_
-#define COMPONENTS_AUDIO_MODEM_PUBLIC_AUDIO_MODEM_TYPES_H_
-
-#include <stddef.h>
-
-#include <string>
-#include <vector>
-
-#include "base/callback_forward.h"
-#include "base/memory/ref_counted.h"
-#include "media/base/channel_layout.h"
-
-// Various constants and types used for the audio modem.
-// TODO(ckehoe): Move the constants out into their own header.
-
-namespace audio_modem {
-
-// Number of repetitions of the audio token in one sequence of samples.
-extern const int kDefaultRepetitions;
-
-// Whispernet encoding parameters. These need to be the same on all platforms.
-extern const float kDefaultSampleRate;
-extern const int kDefaultBitsPerSample;
-extern const float kDefaultCarrierFrequency;
-
-// This really needs to be configurable since it doesn't need
-// to be consistent across platforms, or even playing/recording.
-extern const media::ChannelLayout kDefaultChannelLayout;
-
-// Enum to represent the audio band (audible vs. ultrasound).
-// AUDIBLE and INAUDIBLE are used as array indices.
-enum AudioType {
-  AUDIBLE = 0,
-  INAUDIBLE = 1,
-  BOTH = 2,
-  AUDIO_TYPE_UNKNOWN = 3,
-};
-
-// Struct representing an audio token.
-// TODO(ckehoe): Make this use the AudioType enum instead of a boolean.
-struct AudioToken final {
-  AudioToken(const std::string& token, bool audible)
-      : token(token),
-        audible(audible) {}
-
-  std::string token;
-  bool audible;
-};
-
-// Struct to hold the encoding parameters for tokens.
-// Parity is on by default.
-struct TokenParameters {
-  TokenParameters() : TokenParameters(0, false, true) {}
-
-  explicit TokenParameters(size_t length)
-      : TokenParameters(length, false, true) {}
-
-  TokenParameters(size_t length, bool crc, bool parity)
-      : length(length), crc(crc), parity(parity) {}
-
-  size_t length;
-  bool crc;
-  bool parity;
-};
-
-// Callback to pass around found tokens.
-using TokensCallback = base::Callback<void(const std::vector<AudioToken>&)>;
-
-}  // namespace audio_modem
-
-#endif  // COMPONENTS_AUDIO_MODEM_PUBLIC_AUDIO_MODEM_TYPES_H_