1 files changed, 5 insertions, 0 deletions
diff --git a/dom/base/ResizeObserverController.h b/dom/base/ResizeObserverController.h
index a77511587..2ddfc958c 100644
--- a/dom/base/ResizeObserverController.h
+++ b/dom/base/ResizeObserverController.h
@@ -42,6 +42,10 @@ public:
 
   void Disconnect();
 
+  bool IsRegistered() const { return mRegistered; }
+
+  void DetachFromOwner() { mOwner = nullptr; }
+
 protected:
   virtual ~ResizeObserverNotificationHelper();
 
@@ -69,6 +73,7 @@ public:
   void Traverse(nsCycleCollectionTraversalCallback& aCb);
   void Unlink();
 
+  void DetachFromDocument();
   void AddResizeObserver(ResizeObserver* aObserver);
 
   /*