nsComputedDOMStyle::GetPropertyPriority(const nsAReadableString& aPropertyName, nsAWritableString& aReturn)
nsComputedDOMStyle::GetPropertyPriority(const nsAString& aPropertyName, nsAString& aReturn)
nsComputedDOMStyle::GetPropertyPriority(const nsAReadableString& aPropertyName,                                        nsAWritableString& aReturn){  aReturn.Truncate();  return NS_OK;}