_();
    modelSpec.expectations.push(
        {stage: 'Animation', initiatorType: INITIATOR_TYPE.VIDEO,
          range: [0, 90]}
    );

    const pathForAllThreads = [
      [CHROME_PROCESS_NAMES.BROWSER], [], ['Animation', 'Video']];

    const pathForThread1 = [
      [CHROME_PROCESS_NAMES.BROWSER],
      ['CrBrowserMain'], ['Animation', 'Video']];

    const pathForThread2 = [
      [CHROME_PROCESS_NAMES.BROWSER],
      ['Chrome_IOThread'], ['Animation', 'Video']];

    const model = buildModelFromSpec