nsComputedDOMStyle::RemoveProperty(const nsString& aPropertyName, nsString& aReturn)
nsComputedDOMStyle::RemoveProperty(const nsAReadableString& aPropertyName, nsAWritableString& aReturn)
nsComputedDOMStyle::RemoveProperty(const nsString& aPropertyName,                                   nsString& aReturn){  return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR;}