1 files changed, 7 insertions, 0 deletions
diff --git a/dom/bindings/BindingUtils.h b/dom/bindings/BindingUtils.h
index 2563c5fee..d600acce8 100644
--- a/dom/bindings/BindingUtils.h
+++ b/dom/bindings/BindingUtils.h
@@ -50,6 +50,7 @@ namespace mozilla {
 enum UseCounter : int16_t;
 
 namespace dom {
+class CustomElementReactionsStack;
 template<typename KeyType, typename ValueType> class Record;
 
 nsresult
@@ -3421,6 +3422,12 @@ bool
 GetDesiredProto(JSContext* aCx, const JS::CallArgs& aCallArgs,
                 JS::MutableHandle<JSObject*> aDesiredProto);
 
+// Get the CustomElementReactionsStack for the docgroup of the global
+// of the underlying object of aObj.  This can be null if aObj can't
+// be CheckUnwrapped, or if the global of the result has no docgroup
+// (e.g. because it's not a Window global).
+CustomElementReactionsStack*
+GetCustomElementReactionsStack(JS::Handle<JSObject*> aObj);
 // This function is expected to be called from the constructor function for an
 // HTML element interface; the global/callargs need to be whatever was passed to
 // that constructor function.