nction(t) {
//   this.step_timeout(function() {
//     const workerCreation = performance.now();
//     const worker = new Worker(URL.createObjectURL(blob));
//     worker.addEventListener('message', t.step_func_done(function(event) {
//       const workerOrigin = event.data.timeOrigin;
//       assert_greater_than_equal(workerOrigin - windowOrigin, 200, 'We waited 200ms to spawn the second worker, so its timeOrigin should be greater than that of the window.');
//     }));
//   }, 200);
// }, 'Window and wo