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diff --git a/dom/media/systemservices/objc_video_capture/video_capture_avfoundation.h b/dom/media/systemservices/objc_video_capture/video_capture_avfoundation.h
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+++ b/dom/media/systemservices/objc_video_capture/video_capture_avfoundation.h
@@ -0,0 +1,79 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DOM_MEDIA_SYSTEMSERVICES_OBJC_VIDEO_CAPTURE_VIDEO_CAPTURE2_H_
+#define DOM_MEDIA_SYSTEMSERVICES_OBJC_VIDEO_CAPTURE_VIDEO_CAPTURE2_H_
+
+#import "components/capturer/RTCCameraVideoCapturer.h"
+
+#include "api/scoped_refptr.h"
+#include "api/sequence_checker.h"
+#include "modules/video_capture/video_capture_impl.h"
+#include "mozilla/Maybe.h"
+#include "PerformanceRecorder.h"
+
+@class VideoCaptureAdapter;
+
+namespace webrtc::videocapturemodule {
+
+/**
+ * VideoCaptureImpl implementation of the libwebrtc ios/mac sdk camera backend.
+ * Single threaded except for OnFrame() that happens on a platform callback thread.
+ */
+class VideoCaptureAvFoundation : public VideoCaptureImpl {
+ public:
+  VideoCaptureAvFoundation(AVCaptureDevice* _Nonnull aDevice);
+  virtual ~VideoCaptureAvFoundation();
+
+  static rtc::scoped_refptr<VideoCaptureModule> Create(const char* _Nullable aDeviceUniqueIdUTF8);
+
+  // Implementation of VideoCaptureImpl. Single threaded.
+
+  // Starts capturing synchronously. Idempotent. If an existing capture is live and another
+  // capability is requested we'll restart the underlying backend with the new capability.
+  int32_t StartCapture(const VideoCaptureCapability& aCapability) MOZ_EXCLUDES(api_lock_) override;
+  // Stops capturing synchronously. Idempotent.
+  int32_t StopCapture() MOZ_EXCLUDES(api_lock_) override;
+  bool CaptureStarted() MOZ_EXCLUDES(api_lock_) override;
+  int32_t CaptureSettings(VideoCaptureCapability& aSettings) override;
+
+  // Callback. This can be called on any thread.
+  int32_t OnFrame(__strong RTCVideoFrame* _Nonnull aFrame) MOZ_EXCLUDES(api_lock_);
+
+  void SetTrackingId(uint32_t aTrackingIdProcId) MOZ_EXCLUDES(api_lock_) override;
+
+  // Registers the current thread with the profiler if not already registered.
+  void MaybeRegisterCallbackThread();
+
+ private:
+  // Control thread checker.
+  SequenceChecker mChecker;
+  AVCaptureDevice* _Nonnull const mDevice RTC_GUARDED_BY(mChecker);
+  VideoCaptureAdapter* _Nonnull const mAdapter RTC_GUARDED_BY(mChecker);
+  RTCCameraVideoCapturer* _Nonnull const mCapturer RTC_GUARDED_BY(mChecker);
+  // If capture has started, this is the capability it was started for. Written on the mChecker
+  // thread only.
+  mozilla::Maybe<VideoCaptureCapability> mCapability MOZ_GUARDED_BY(api_lock_);
+  // The image type that mCapability maps to. Set in lockstep with mCapability.
+  mozilla::Maybe<mozilla::CaptureStage::ImageType> mImageType MOZ_GUARDED_BY(api_lock_);
+  // Id string uniquely identifying this capture source. Written on the mChecker thread only.
+  mozilla::Maybe<mozilla::TrackingId> mTrackingId MOZ_GUARDED_BY(api_lock_);
+  // Adds frame specific markers to the profiler while mTrackingId is set. Callback thread only.
+  mozilla::PerformanceRecorderMulti<mozilla::CaptureStage> mCaptureRecorder;
+  mozilla::PerformanceRecorderMulti<mozilla::CopyVideoStage> mConversionRecorder;
+  std::atomic<ProfilerThreadId> mCallbackThreadId;
+};
+
+}  // namespace webrtc::videocapturemodule
+
+@interface VideoCaptureAdapter : NSObject <RTCVideoCapturerDelegate> {
+  webrtc::Mutex _mutex;
+  webrtc::videocapturemodule::VideoCaptureAvFoundation* _Nullable _capturer RTC_GUARDED_BY(_mutex);
+}
+- (void)setCapturer:(webrtc::videocapturemodule::VideoCaptureAvFoundation* _Nullable)capturer;
+@end
+
+#endif