Revert of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/objc/device_info.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_DEVICE_INFO_H_
-#define WEBRTC_MODULES_VIDEO_CAPTURE_OBJC_DEVICE_INFO_H_
-
-#include "webrtc/modules/video_capture/device_info_impl.h"
-
-#include <map>
-#include <string>
-
-namespace webrtc {
-namespace videocapturemodule {
-class DeviceInfoIos : public DeviceInfoImpl {
- public:
-  explicit DeviceInfoIos(const int32_t device_id);
-  virtual ~DeviceInfoIos();
-
-  // Implementation of DeviceInfoImpl.
-  int32_t Init() override;
-  uint32_t NumberOfDevices() override;
-  int32_t GetDeviceName(uint32_t deviceNumber,
-                        char* deviceNameUTF8,
-                        uint32_t deviceNameLength,
-                        char* deviceUniqueIdUTF8,
-                        uint32_t deviceUniqueIdUTF8Length,
-                        char* productUniqueIdUTF8 = 0,
-                        uint32_t productUniqueIdUTF8Length = 0) override;
-
-  int32_t NumberOfCapabilities(const char* deviceUniqueIdUTF8) override;
-
-  int32_t GetCapability(const char* deviceUniqueIdUTF8,
-                        const uint32_t deviceCapabilityNumber,
-                        VideoCaptureCapability& capability) override;
-
-  int32_t DisplayCaptureSettingsDialogBox(const char* deviceUniqueIdUTF8,
-                                          const char* dialogTitleUTF8,
-                                          void* parentWindow,
-                                          uint32_t positionX,
-                                          uint32_t positionY) override;
-
-  int32_t GetOrientation(const char* deviceUniqueIdUTF8,
-                         VideoRotation& orientation) override;
-
-  int32_t CreateCapabilityMap(const char* device_unique_id_utf8) override;
-
- private:
-  std::map<std::string, VideoCaptureCapabilities> _capabilitiesMap;
-};
-
-}  // namespace videocapturemodule
-}  // namespace webrtc
-
-#endif  // WEBRTC_MODULES_VIDEO_CAPTURE_OBJC_DEVICE_INFO_H_