NoInterfaceObject
] interface PluginPlaceholderElement : HTMLDivElement {
[ImplementedInPrivateScript, OnlyExposedToPrivateScript] attribute DOMString message;
+ [ImplementedInPrivateScript, OnlyExposedToPrivateScript] attribute boolean closeable;
+
[ImplementedInPrivateScript, OnlyExposedToPrivateScript] void createdCallback();
};