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diff --git a/dom/media/webrtc/MediaEngineRemoteVideoSource.h b/dom/media/webrtc/MediaEngineRemoteVideoSource.h
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+++ b/dom/media/webrtc/MediaEngineRemoteVideoSource.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=2 ts=8 et ft=cpp : */
+/* 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 MEDIAENGINE_REMOTE_VIDEO_SOURCE_H_
+#define MEDIAENGINE_REMOTE_VIDEO_SOURCE_H_
+
+#include "prcvar.h"
+#include "prthread.h"
+#include "nsIThread.h"
+#include "nsIRunnable.h"
+
+#include "mozilla/Mutex.h"
+#include "mozilla/Monitor.h"
+#include "nsCOMPtr.h"
+#include "nsThreadUtils.h"
+#include "DOMMediaStream.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsComponentManagerUtils.h"
+
+#include "VideoUtils.h"
+#include "MediaEngineCameraVideoSource.h"
+#include "VideoSegment.h"
+#include "AudioSegment.h"
+#include "StreamTracks.h"
+#include "MediaStreamGraph.h"
+
+#include "MediaEngineWrapper.h"
+#include "mozilla/dom/MediaStreamTrackBinding.h"
+
+// WebRTC library includes follow
+#include "webrtc/common.h"
+#include "webrtc/video_engine/include/vie_capture.h"
+#include "webrtc/video_engine/include/vie_render.h"
+#include "CamerasChild.h"
+
+#include "NullTransport.h"
+
+namespace webrtc {
+class I420VideoFrame;
+}
+
+namespace mozilla {
+
+/**
+ * The WebRTC implementation of the MediaEngine interface.
+ */
+class MediaEngineRemoteVideoSource : public MediaEngineCameraVideoSource,
+                                     public webrtc::ExternalRenderer
+{
+  typedef MediaEngineCameraVideoSource Super;
+public:
+  NS_DECL_THREADSAFE_ISUPPORTS
+
+  // ExternalRenderer
+  int FrameSizeChange(unsigned int w, unsigned int h,
+                      unsigned int streams) override;
+  int DeliverFrame(unsigned char* buffer,
+                   size_t size,
+                   uint32_t time_stamp,
+                   int64_t ntp_time,
+                   int64_t render_time,
+                   void *handle) override;
+  // XXX!!!! FIX THIS
+  int DeliverI420Frame(const webrtc::I420VideoFrame& webrtc_frame) override { return 0; };
+  bool IsTextureSupported() override { return false; };
+
+  // MediaEngineCameraVideoSource
+  MediaEngineRemoteVideoSource(int aIndex, mozilla::camera::CaptureEngine aCapEngine,
+                               dom::MediaSourceEnum aMediaSource,
+                               bool aScary = false,
+                               const char* aMonitorName = "RemoteVideo.Monitor");
+
+  nsresult Allocate(const dom::MediaTrackConstraints& aConstraints,
+                    const MediaEnginePrefs& aPrefs,
+                    const nsString& aDeviceId,
+                    const nsACString& aOrigin,
+                    AllocationHandle** aOutHandle,
+                    const char** aOutBadConstraint) override;
+  nsresult Deallocate(AllocationHandle* aHandle) override;
+  nsresult Start(SourceMediaStream*, TrackID, const PrincipalHandle&) override;
+  nsresult Stop(SourceMediaStream*, TrackID) override;
+  nsresult Restart(AllocationHandle* aHandle,
+                   const dom::MediaTrackConstraints& aConstraints,
+                   const MediaEnginePrefs &aPrefs,
+                   const nsString& aDeviceId,
+                   const char** aOutBadConstraint) override;
+  void NotifyPull(MediaStreamGraph* aGraph,
+                  SourceMediaStream* aSource,
+                  TrackID aId,
+                  StreamTime aDesiredTime,
+                  const PrincipalHandle& aPrincipalHandle) override;
+  dom::MediaSourceEnum GetMediaSource() const override {
+    return mMediaSource;
+  }
+
+  bool ChooseCapability(const NormalizedConstraints &aConstraints,
+                        const MediaEnginePrefs &aPrefs,
+                        const nsString& aDeviceId) override;
+
+  void Refresh(int aIndex);
+
+  void Shutdown() override;
+
+  bool GetScary() const override { return mScary; }
+
+protected:
+  ~MediaEngineRemoteVideoSource() { }
+
+private:
+  // Initialize the needed Video engine interfaces.
+  void Init();
+  size_t NumCapabilities() const override;
+  void GetCapability(size_t aIndex, webrtc::CaptureCapability& aOut) const override;
+  void SetLastCapability(const webrtc::CaptureCapability& aCapability);
+
+  nsresult
+  UpdateSingleSource(const AllocationHandle* aHandle,
+                     const NormalizedConstraints& aNetConstraints,
+                     const MediaEnginePrefs& aPrefs,
+                     const nsString& aDeviceId,
+                     const char** aOutBadConstraint) override;
+
+  dom::MediaSourceEnum mMediaSource; // source of media (camera | application | screen)
+  mozilla::camera::CaptureEngine mCapEngine;
+
+  // To only restart camera when needed, we keep track previous settings.
+  webrtc::CaptureCapability mLastCapability;
+  bool mScary;
+};
+
+}
+
+#endif /* MEDIAENGINE_REMOTE_VIDEO_SOURCE_H_ */