1 files changed, 33 insertions, 0 deletions
diff --git a/dom/vr/VREventObserver.h b/dom/vr/VREventObserver.h
new file mode 100644
index 000000000..a30bb5960
--- /dev/null
+++ b/dom/vr/VREventObserver.h
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 mozilla_dom_VREventObserver_h
+#define mozilla_dom_VREventObserver_h
+
+class nsGlobalWindow;
+
+namespace mozilla {
+namespace dom {
+
+class VREventObserver final
+{
+public:
+  ~VREventObserver();
+  explicit VREventObserver(nsGlobalWindow* aGlobalWindow);
+
+  void NotifyVRDisplayConnect();
+  void NotifyVRDisplayDisconnect();
+  void NotifyVRDisplayPresentChange();
+
+private:
+  // Weak pointer, instance is owned by mWindow.
+  nsGlobalWindow* MOZ_NON_OWNING_REF mWindow;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_VREventObserver_h