Delete the audio modem and copresence private APIs.

components/audio_modem/test/stub_modem.cc

-// 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.
-
-#include "components/audio_modem/test/stub_modem.h"
-
-#include "base/base64.h"
-#include "base/logging.h"
-
-namespace audio_modem {
-
-StubModem::StubModem() {
-  playing_[AUDIBLE] = false;
-  playing_[INAUDIBLE] = false;
-  recording_[AUDIBLE] = false;
-  recording_[INAUDIBLE] = false;
-}
-
-StubModem::~StubModem() {}
-
-void StubModem::Initialize(WhispernetClient* whispernet_client,
-                           const TokensCallback& tokens_cb) {
-  tokens_callback_ = tokens_cb;
-}
-
-void StubModem::StartPlaying(AudioType type) {
-  playing_[type] = true;
-}
-
-void StubModem::StopPlaying(AudioType type) {
-  playing_[type] = false;
-}
-
-void StubModem::StartRecording(AudioType type) {
-  recording_[type] = true;
-}
-
-void StubModem::StopRecording(AudioType type) {
-  recording_[type] = false;
-}
-
-const std::string StubModem::GetToken(AudioType type) const {
-  return std::string();
-}
-
-bool StubModem::IsPlayingTokenHeard(AudioType type) const {
-  return false;
-}
-
-bool StubModem::IsRecording(AudioType type) const {
-  return recording_[type];
-}
-
-bool StubModem::IsPlaying(AudioType type) const {
-  return playing_[type];
-}
-
-void StubModem::DeliverTokens(const std::vector<AudioToken>& tokens) {
-  std::vector<AudioToken> encoded_tokens;
-  for (const AudioToken& token : tokens) {
-    std::string encoded_token;
-    base::Base64Encode(token.token, & encoded_token);
-    encoded_tokens.push_back(AudioToken(encoded_token, token.audible));
-  }
-  DCHECK_EQ(tokens.size(), encoded_tokens.size());
-  tokens_callback_.Run(encoded_tokens);
-}
-
-}  // namespace audio_modem