Revert of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/objc/rtc_video_capture_objc.h

-/*
- *  Copyright (c) 2013 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_MODULES_VIDEO_CAPTURE_OBJC_RTC_VIDEO_CAPTURE_OBJC_H_
-#define WEBRTC_MODULES_VIDEO_CAPTURE_OBJC_RTC_VIDEO_CAPTURE_OBJC_H_
-
-#import <Foundation/Foundation.h>
-#ifdef WEBRTC_IOS
-#import <UIKit/UIKit.h>
-#endif
-
-#include "webrtc/modules/video_capture/objc/video_capture.h"
-
-// The following class listens to a notification with name:
-// 'StatusBarOrientationDidChange'.
-// This notification must be posted in order for the capturer to reflect the
-// orientation change in video w.r.t. the application orientation.
-@interface RTCVideoCaptureIosObjC
-    : NSObject<AVCaptureVideoDataOutputSampleBufferDelegate>
-
-@property webrtc::VideoRotation frameRotation;
-
-// custom initializer. Instance of VideoCaptureIos is needed
-// for callback purposes.
-// default init methods have been overridden to return nil.
-- (id)initWithOwner:(webrtc::videocapturemodule::VideoCaptureIos*)owner
-          captureId:(int)captureId;
-- (BOOL)setCaptureDeviceByUniqueId:(NSString*)uniqueId;
-- (BOOL)startCaptureWithCapability:
-    (const webrtc::VideoCaptureCapability&)capability;
-- (BOOL)stopCapture;
-
-@end
-#endif  // WEBRTC_MODULES_VIDEO_CAPTURE_OBJC_RTC_VIDEO_CAPTURE_OBJC_H_