Revert of Make cricket::VideoCapturer implement VideoSourceInterface

webrtc/media/base/videobroadcaster.h

-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_
-#define WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_
-
-#include <utility>
-#include <vector>
-
-#include "webrtc/base/thread_checker.h"
-#include "webrtc/media/base/videoframe.h"
-#include "webrtc/media/base/videosinkinterface.h"
-#include "webrtc/media/base/videosourceinterface.h"
-
-namespace rtc {
-
-class VideoBroadcaster : public VideoSourceInterface<cricket::VideoFrame>,
-                         public VideoSinkInterface<cricket::VideoFrame> {
- public:
-  VideoBroadcaster();
-  void AddOrUpdateSink(VideoSinkInterface<cricket::VideoFrame>* sink,
-                       const VideoSinkWants& wants) override;
-  void RemoveSink(VideoSinkInterface<cricket::VideoFrame>* sink) override;
-
-  // Returns true if the next frame will be delivered to at least one sink.
-  bool frame_wanted() const;
-
-  // Returns VideoSinkWants a source is requested to fulfill. They are
-  // aggregated by all VideoSinkWants from all sinks.
-  VideoSinkWants wants() const;
-
-  void OnFrame(const cricket::VideoFrame& frame) override;
-
- protected:
-  struct SinkPair {
-    SinkPair(VideoSinkInterface<cricket::VideoFrame>* sink,
-             VideoSinkWants wants)
-        : sink(sink), wants(wants) {}
-    VideoSinkInterface<cricket::VideoFrame>* sink;
-    VideoSinkWants wants;
-  };
-  SinkPair* FindSinkPair(const VideoSinkInterface<cricket::VideoFrame>* sink);
-
-  ThreadChecker thread_checker_;
-
-  VideoSinkWants current_wants_;
-
-  std::vector<SinkPair> sinks_;
-};
-
-}  // namespace rtc
-
-#endif  // WEBRTC_MEDIA_BASE_VIDEOBROADCASTER_H_