 cat: 'renderer.scheduler',
          id: ':ptr:0x1ee7beef', title: 'FrameScheduler.Baz',
          start: 0.3, duration: 0.3 }));
    g.push(newAsyncSliceEx(
        { cat: 'renderer.scheduler',
          id: ':ptr:0x1ee7beef', title: 'FrameScheduler.Baz',
          start: 0.7, duration: 0.2 }));
    g.push(newAsyncSliceEx(
        { title: 'VeryBusy',
          start: 1, duration: 1.5 }));
    g.push(newAsyncSliceEx(
        { title: 'Loading',
          start: 0, duration: 5 }));
    assert.strictEqual(g