1. DomName('WorkerPerformance.measure')
  2. DocsEditable()
  3. Experimental()
void measure(String measureName, String startMark, String endMark)

Source 

@DomName('WorkerPerformance.measure')
@DocsEditable()
@Experimental() // untriaged
void measure(String measureName, String startMark, String endMark) => _blink.BlinkWorkerPerformance.instance.measure_Callback_3_(this, measureName, startMark, endMark);