Move RemoteMediaStreamAudioTrack to Separete Files

content/renderer/media/remote_media_stream_audio_track.h

+// Copyright (c) 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_RENDERER_MEDIA_REMOTE_MEDIA_STREAM_AUDIO_TRACK_H_
+#define CONTENT_RENDERER_MEDIA_REMOTE_MEDIA_STREAM_AUDIO_TRACK_H_
+
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
+#include "content/renderer/media/media_stream_track.h"
+
+namespace content {
+
+class RemoteMediaStreamAudioTrack : public MediaStreamTrack {
+ public:
+  RemoteMediaStreamAudioTrack(
+      const scoped_refptr<webrtc::AudioTrackInterface>& track,
+      const scoped_refptr<base::SingleThreadTaskRunner>& signaling_thread);
+
+  ~RemoteMediaStreamAudioTrack() override;
+
+ private:
+  void SetEnabled(bool enabled) override;
+
+  void Stop() override;
+
+ private:
+  const scoped_refptr<webrtc::AudioTrackInterface> track_;
+  const scoped_refptr<base::SingleThreadTaskRunner> signaling_thread_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_MEDIA_REMOTE_MEDIA_STREAM_AUDIO_TRACK_H_