Revert of [Mojo Video Capture] Decouple VCController from VCBufferPool and VCDeviceClient

content/browser/renderer_host/media/video_frame_receiver_on_io_thread.h

-// Copyright 2016 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_VIDEO_FRAME_RECEIVER_ON_IO_THREAD_H_
-#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_FRAME_RECEIVER_ON_IO_THREAD_H_
-
-#include "content/common/content_export.h"
-#include "media/capture/video/video_frame_receiver.h"
-
-namespace content {
-
-// Decorator for media::VideoFrameReceiver that forwards all incoming calls
-// to the Browser IO thread.
-// TODO(chfremer): Change this to VideoFrameReceiverOnTaskRunner and have the
-// target task runner be passed into the constructor. See crbug.com/674190.
-class CONTENT_EXPORT VideoFrameReceiverOnIOThread
-    : public media::VideoFrameReceiver {
- public:
-  explicit VideoFrameReceiverOnIOThread(
-      const base::WeakPtr<VideoFrameReceiver>& receiver);
-  ~VideoFrameReceiverOnIOThread() override;
-
-  void OnIncomingCapturedVideoFrame(
-      std::unique_ptr<media::VideoCaptureDevice::Client::Buffer> buffer,
-      scoped_refptr<media::VideoFrame> frame) override;
-  void OnError() override;
-  void OnLog(const std::string& message) override;
-  void OnBufferDestroyed(int buffer_id_to_drop) override;
-
- private:
-  base::WeakPtr<VideoFrameReceiver> receiver_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_FRAME_RECEIVER_ON_IO_THREAD_H_