Delete the audio modem and copresence private APIs.

components/audio_modem/public/whispernet_client.h

-// Copyright 2014 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_WHISPERNET_CLIENT_H_
-#define COMPONENTS_AUDIO_MODEM_PUBLIC_WHISPERNET_CLIENT_H_
-
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "components/audio_modem/public/audio_modem_types.h"
-#include "media/base/audio_bus.h"
-
-namespace audio_modem {
-
-// Generic callback to indicate a boolean success or failure.
-using SuccessCallback = base::Callback<void(bool)>;
-
-// Callback to receive encoded samples from Whispernet.
-// AudioType type: Type of audio encoding - AUDIBLE or INAUDIBLE.
-// const std::string& token: The token that we encoded.
-// const scoped_refptr<media::AudioBusRefCounted>& samples - Encoded samples.
-using SamplesCallback =
-    base::Callback<void(AudioType,
-                        const std::string&,
-                        const scoped_refptr<media::AudioBusRefCounted>&)>;
-
-// A client for the Whispernet audio library,
-// responsible for the actual encoding and decoding of tokens.
-class WhispernetClient {
- public:
-  // Initialize the whispernet client and call the callback when done. The
-  // parameter indicates whether we succeeded or failed.
-  virtual void Initialize(const SuccessCallback& init_callback) = 0;
-
-  // Fires an event to request a token encode.
-  virtual void EncodeToken(const std::string& token,
-                           AudioType type,
-                           const TokenParameters token_params[2]) = 0;
-  // Fires an event to request a decode for the given samples.
-  virtual void DecodeSamples(AudioType type,
-                             const std::string& samples,
-                             const TokenParameters token_params[2]) = 0;
-
-  // Callback registration methods. The modem will set these to receive data.
-  virtual void RegisterTokensCallback(
-      const TokensCallback& tokens_callback) = 0;
-  virtual void RegisterSamplesCallback(
-      const SamplesCallback& samples_callback) = 0;
-
-  // Don't cache these callbacks, as they may become invalid at any time.
-  // Always invoke callbacks directly through these accessors.
-  virtual TokensCallback GetTokensCallback() = 0;
-  virtual SamplesCallback GetSamplesCallback() = 0;
-  virtual SuccessCallback GetInitializedCallback() = 0;
-
-  virtual ~WhispernetClient() {}
-};
-
-}  // namespace audio_modem
-
-#endif  // COMPONENTS_AUDIO_MODEM_PUBLIC_WHISPERNET_CLIENT_H_