Revert of Unify the macOS and iOS capturer implementations

webrtc/modules/video_capture/ios/video_capture_ios.h

Index: webrtc/modules/video_capture/ios/video_capture_ios.h
diff --git a/webrtc/modules/video_capture/ios/video_capture_ios.h b/webrtc/modules/video_capture/ios/video_capture_ios.h
new file mode 100644
index 0000000000000000000000000000000000000000..51728551615a21f9d40a1159e7f2c3fedb77921f
--- /dev/null
+++ b/webrtc/modules/video_capture/ios/video_capture_ios.h
@@ -0,0 +1,46 @@
+/*
+ *  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_IOS_VIDEO_CAPTURE_IOS_H_
+#define WEBRTC_MODULES_VIDEO_CAPTURE_IOS_VIDEO_CAPTURE_IOS_H_
+
+#include "webrtc/base/scoped_ref_ptr.h"
+#include "webrtc/modules/video_capture/video_capture_impl.h"
+
+@class RTCVideoCaptureIosObjC;
+
+namespace webrtc {
+namespace videocapturemodule {
+class VideoCaptureIos : public VideoCaptureImpl {
+ public:
+  explicit VideoCaptureIos(const int32_t capture_id);
+  virtual ~VideoCaptureIos();
+
+  static rtc::scoped_refptr<VideoCaptureModule> Create(
+      const int32_t capture_id,
+      const char* device_unique_id_utf8);
+
+  // Implementation of VideoCaptureImpl.
+  int32_t StartCapture(const VideoCaptureCapability& capability) override;
+  int32_t StopCapture() override;
+  bool CaptureStarted() override;
+  int32_t CaptureSettings(VideoCaptureCapability& settings) override;
+
+ private:
+  RTCVideoCaptureIosObjC* capture_device_;
+  bool is_capturing_;
+  int32_t id_;
+  VideoCaptureCapability capability_;
+};
+
+}  // namespace videocapturemodule
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_CAPTURE_IOS_VIDEO_CAPTURE_IOS_H_