Reland of Injectable Obj-C video codecs

webrtc/sdk/objc/Framework/Classes/VideoToolbox/videocodecfactory.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_SDK_OBJC_FRAMEWORK_CLASSES_VIDEOTOOLBOX_VIDEOCODECFACTORY_H_
-#define WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_VIDEOTOOLBOX_VIDEOCODECFACTORY_H_
-
-#include "webrtc/media/engine/webrtcvideoencoderfactory.h"
-#include "webrtc/media/engine/webrtcvideodecoderfactory.h"
-
-namespace webrtc {
-
-class VideoToolboxVideoEncoderFactory
-    : public cricket::WebRtcVideoEncoderFactory {
- public:
-  VideoToolboxVideoEncoderFactory();
-  ~VideoToolboxVideoEncoderFactory();
-
-  // WebRtcVideoEncoderFactory implementation.
-  VideoEncoder* CreateVideoEncoder(const cricket::VideoCodec& codec) override;
-  void DestroyVideoEncoder(VideoEncoder* encoder) override;
-  const std::vector<cricket::VideoCodec>& supported_codecs() const override;
-
- private:
-  // TODO(magjed): Mutable because it depends on a field trial and it is
-  // recalculated every call to supported_codecs().
-  mutable std::vector<cricket::VideoCodec> supported_codecs_;
-};
-
-class VideoToolboxVideoDecoderFactory
-    : public cricket::WebRtcVideoDecoderFactory {
- public:
-  VideoToolboxVideoDecoderFactory();
-  ~VideoToolboxVideoDecoderFactory();
-
-  // WebRtcVideoDecoderFactory implementation.
-  VideoDecoder* CreateVideoDecoder(VideoCodecType type) override;
-  void DestroyVideoDecoder(VideoDecoder* decoder) override;
-
- private:
-  std::vector<cricket::VideoCodec> supported_codecs_;
-};
-
-}  // namespace webrtc
-
-#endif  // WEBRTC_SDK_OBJC_FRAMEWORK_CLASSES_VIDEOTOOLBOX_VIDEOCODECFACTORY_H_