nsCOMPtr<nsIXBLBinding> binding; GetBinding(aContent, getter_AddRefs(binding));
nsXBLBinding *binding = nsBindingManager::GetBinding(aContent);
nsBindingManager::ShouldBuildChildFrames(nsIContent* aContent, PRBool* aResult){  *aResult = PR_TRUE;  nsCOMPtr<nsIXBLBinding> binding;  GetBinding(aContent, getter_AddRefs(binding));  if (binding)    return binding->ShouldBuildChildFrames(aResult);  return NS_OK;}