NS_ENSURE_TRUE(mControls, NS_ERROR_UNEXPECTED);
if (!ShouldBeInElements(aChild)) { return NS_OK; }
nsHTMLFormElement::RemoveElementFromTable(nsIFormControl* aElement,                                          const nsAString& aName){  NS_ENSURE_TRUE(mControls, NS_ERROR_UNEXPECTED);  return mControls->RemoveElementFromTable(aElement, aName);}