// Builtins needed for running tests. [LegacyNoInterfaceObject,Exposed=*] interface AnyCallback {}; [LegacyNoInterfaceObject,Exposed=*] interface Element {}; [LegacyNoInterfaceObject,Exposed=*] interface IsInstance {}; [LegacyNoInterfaceObject,Exposed=*] interface Location {}; [LegacyNoInterfaceObject,Exposed=*] interface Node {};