tion() {
    const histograms = new tr.v.HistogramSet();
    tr.metrics.sh.androidSystraceMetric(histograms, makeModel([]));
    assert.lengthOf(histograms, 0);
  });

  test('androidSystraceMetric_startup_simple', function() {
    const systrace = [
      SYSTRACE_SYSTEM_SERVER_ANNOTATION,
      SYSTRACE_TOUCH_SLICE,
      SYSTRACE_LAUNCH_SLICE,
      SYSTRACE_DRAW_SLICE
    ];
    testStartup(systrace, 1955);
  });

  test('androidSystraceMetric_startup_noTouch', function() {
    const systrace = [
      