Reland 153623004: Remove the unified IO code on the browser

media/audio/pulse/pulse_unified.h

Index: media/audio/pulse/pulse_unified.h
diff --git a/media/audio/pulse/pulse_unified.h b/media/audio/pulse/pulse_unified.h
deleted file mode 100644
index a800d099a109ff0d2941a32b9865930ff76ebaf5..0000000000000000000000000000000000000000
--- a/media/audio/pulse/pulse_unified.h
+++ /dev/null
@@ -1,90 +0,0 @@
-// Copyright 2013 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 MEDIA_AUDIO_PULSE_PULSE_UNIFIED_H_
-#define MEDIA_AUDIO_PULSE_PULSE_UNIFIED_H_
-
-#include <pulse/pulseaudio.h>
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-#include "media/audio/audio_io.h"
-#include "media/audio/audio_parameters.h"
-#include "media/base/audio_fifo.h"
-
-namespace media {
-
-class AudioManagerBase;
-class SeekableBuffer;
-
-class PulseAudioUnifiedStream : public AudioOutputStream {
- public:
-  PulseAudioUnifiedStream(const AudioParameters& params,
-                          const std::string& input_device_id,
-                          AudioManagerBase* manager);
-
-  virtual ~PulseAudioUnifiedStream();
-
-  // Implementation of PulseAudioUnifiedStream.
-  virtual bool Open() OVERRIDE;
-  virtual void Close() OVERRIDE;
-  virtual void Start(AudioSourceCallback* callback) OVERRIDE;
-  virtual void Stop() OVERRIDE;
-  virtual void SetVolume(double volume) OVERRIDE;
-  virtual void GetVolume(double* volume) OVERRIDE;
-
- private:
-  // Called by PulseAudio when |pa_stream_| change state.  If an unexpected
-  // failure state change happens and |source_callback_| is set
-  // this method will forward the error via OnError().
-  static void StreamNotifyCallback(pa_stream* s, void* user_data);
-
-  // Called by PulseAudio recording stream when it has data.
-  static void ReadCallback(pa_stream* s, size_t length, void* user_data);
-
-  // Helpers for ReadCallback() to read and write data.
-  void WriteData(size_t requested_bytes);
-  void ReadData();
-
-  // Close() helper function to free internal structs.
-  void Reset();
-
-  // AudioParameters from the constructor.
-  const AudioParameters params_;
-
-  // Device unique ID of the input device.
-  const std::string input_device_id_;
-
-  // Audio manager that created us.  Used to report that we've closed.
-  AudioManagerBase* manager_;
-
-  // PulseAudio API structs.
-  pa_context* pa_context_;
-  pa_threaded_mainloop* pa_mainloop_;
-  pa_stream* input_stream_;
-  pa_stream* output_stream_;
-
-  // Float representation of volume from 0.0 to 1.0.
-  float volume_;
-
-  // Callback to audio data source.  Must only be modified while holding a lock
-  // on |pa_mainloop_| via pa_threaded_mainloop_lock().
-  AudioSourceCallback* source_callback_;
-
-  scoped_ptr<AudioBus> input_bus_;
-  scoped_ptr<AudioBus> output_bus_;
-
-  // Used for input to output buffering.
-  scoped_ptr<media::SeekableBuffer> fifo_;
-
-  // Temporary storage for recorded data. It gets a packet of data from
-  // |fifo_| and deliver the data to OnMoreIOData() callback.
-  scoped_ptr<uint8[]> input_data_buffer_;
-
-  DISALLOW_COPY_AND_ASSIGN(PulseAudioUnifiedStream);
-};
-
-}  // namespace media
-
-#endif  // MEDIA_AUDIO_PULSE_PULSE_UNIFIED_H_