Revert of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/objc/device_info_objc.h

Index: webrtc/modules/video_capture/objc/device_info_objc.h
diff --git a/webrtc/modules/video_capture/objc/device_info_objc.h b/webrtc/modules/video_capture/objc/device_info_objc.h
deleted file mode 100644
index b5db689e304730ad7aa408c3fe0d74765eeaa789..0000000000000000000000000000000000000000
--- a/webrtc/modules/video_capture/objc/device_info_objc.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- *  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_DEVICE_INFO_OBJC_H_
-#define WEBRTC_MODULES_VIDEO_CAPTURE_OBJC_DEVICE_INFO_OBJC_H_
-
-#import <AVFoundation/AVFoundation.h>
-
-#include "webrtc/modules/video_capture/video_capture_defines.h"
-
-@interface DeviceInfoIosObjC : NSObject
-+ (int)captureDeviceCount;
-+ (AVCaptureDevice*)captureDeviceForIndex:(int)index;
-+ (AVCaptureDevice*)captureDeviceForUniqueId:(NSString*)uniqueId;
-+ (NSString*)deviceNameForIndex:(int)index;
-+ (NSString*)deviceUniqueIdForIndex:(int)index;
-+ (NSString*)deviceNameForUniqueId:(NSString*)uniqueId;
-+ (webrtc::VideoCaptureCapability)capabilityForPreset:(NSString*)preset;
-
-@end
-
-#endif  // WEBRTC_MODULES_VIDEO_CAPTURE_OBJC_DEVICE_INFO_OBJC_H_