Move AudioDebugFileWriter from content/ to media/.

content/browser/renderer_host/media/audio_debug_file_writer.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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_DEBUG_FILE_WRITER_H_
-#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_DEBUG_FILE_WRITER_H_
-
-#include <stdint.h>
-
-#include <memory>
-
-#include "base/files/file.h"
-#include "base/macros.h"
-#include "base/sequence_checker.h"
-#include "content/common/content_export.h"
-#include "content/public/browser/browser_thread.h"
-#include "media/audio/audio_file_writer.h"
-#include "media/base/audio_parameters.h"
-
-namespace media {
-
-class AudioBus;
-
-}  // namespace media
-
-namespace content {
-
-// Writes audio input data used for debugging purposes. All operations are
-// non-blocking.
-class CONTENT_EXPORT AudioDebugFileWriter
-    : public NON_EXPORTED_BASE(media::AudioFileWriter) {
- public:
-  explicit AudioDebugFileWriter(const media::AudioParameters& params);
-  ~AudioDebugFileWriter() override;
-
-  void Start(const base::FilePath& file) override;
-  void Stop() override;
-  void Write(std::unique_ptr<media::AudioBus> data) override;
-  bool WillWrite() override;
-
- private:
-  class AudioFileWriter;
-  using AudioFileWriterUniquePtr =
-      std::unique_ptr<AudioFileWriter, BrowserThread::DeleteOnFileThread>;
-  AudioFileWriterUniquePtr file_writer_;
-  const media::AudioParameters params_;
-  base::SequenceChecker client_sequence_checker_;
-};
-
-}  // namspace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_DEBUG_FILE_WRITER_H_