1 files changed, 15 insertions, 9 deletions
diff --git a/dom/base/CustomElementRegistry.h b/dom/base/CustomElementRegistry.h
index 81d1c003c..eb4285fd2 100644
--- a/dom/base/CustomElementRegistry.h
+++ b/dom/base/CustomElementRegistry.h
@@ -383,15 +383,6 @@ public:
    */
   static void Upgrade(Element* aElement, CustomElementDefinition* aDefinition, ErrorResult& aRv);
 
-private:
-  ~CustomElementRegistry();
-
-  static UniquePtr<CustomElementCallback> CreateCustomElementCallback(
-    nsIDocument::ElementCallbackType aType, Element* aCustomElement,
-    LifecycleCallbackArgs* aArgs,
-    LifecycleAdoptedCallbackArgs* aAdoptedCallbackArgs,
-    CustomElementDefinition* aDefinition);
-
   /**
    * Registers an unresolved custom element that is a candidate for
    * upgrade when the definition is registered via registerElement.
@@ -403,6 +394,21 @@ private:
   void RegisterUnresolvedElement(Element* aElement,
                                  nsIAtom* aTypeName = nullptr);
 
+  /**
+   * Unregister an unresolved custom element that is a candidate for
+   * upgrade when a custom element is removed from tree.
+   */
+  void UnregisterUnresolvedElement(Element* aElement,
+                                   nsIAtom* aTypeName = nullptr);
+private:
+  ~CustomElementRegistry();
+
+  static UniquePtr<CustomElementCallback> CreateCustomElementCallback(
+    nsIDocument::ElementCallbackType aType, Element* aCustomElement,
+    LifecycleCallbackArgs* aArgs,
+    LifecycleAdoptedCallbackArgs* aAdoptedCallbackArgs,
+    CustomElementDefinition* aDefinition);
+
   void UpgradeCandidates(nsIAtom* aKey,
                          CustomElementDefinition* aDefinition,
                          ErrorResult& aRv);