Remove dependency on AudioStub in ConnectionToClient

remoting/host/audio_pump.h

-// 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 REMOTING_HOST_AUDIO_PUMP_H_
-#define REMOTING_HOST_AUDIO_PUMP_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/thread_checker.h"
-
-namespace base {
-class SingleThreadTaskRunner;
-}  // namespace base
-
-namespace remoting {
-
-namespace protocol {
-class AudioStub;
-}  // namespace protocol
-
-class AudioCapturer;
-class AudioEncoder;
-class AudioPacket;
-
-// AudioPump is responsible for fetching audio data from the AudioCapturer
-// and encoding it before passing it to the AudioStub for delivery to the
-// client. Audio is captured and encoded on the audio thread and then passed to
-// AudioStub on the network thread.
-class AudioPump {
- public:
-  // The caller must ensure that the |audio_stub| is not destroyed until the
-  // pump is destroyed.
-  AudioPump(scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner,
-            std::unique_ptr<AudioCapturer> audio_capturer,
-            std::unique_ptr<AudioEncoder> audio_encoder,
-            protocol::AudioStub* audio_stub);
-  virtual ~AudioPump();
-
-  // Pauses or resumes audio on a running session. This leaves the audio
-  // capturer running, and only affects whether or not the captured audio is
-  // encoded and sent on the wire.
-  void Pause(bool pause);
-
- private:
-  class Core;
-
-  // Called on the network thread to send a captured packet to the audio stub.
-  void SendAudioPacket(std::unique_ptr<AudioPacket> packet, int size);
-
-  // Callback for BufferedSocketWriter.
-  void OnPacketSent(int size);
-
-  base::ThreadChecker thread_checker_;
-
-  scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner_;
-  protocol::AudioStub* audio_stub_;
-
-  std::unique_ptr<Core> core_;
-
-  base::WeakPtrFactory<AudioPump> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(AudioPump);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_AUDIO_PUMP_H_