in: originSameOrigin,
  async funcAfterAssertion(pageA, pageB) {
    const activationData = await pageA.execute_script(() => {
      return { entryURL : navigation.activation.entry.url,
               fromURL : navigation.activation.from.url,
               navigationType : navigation.activation.navigationType }
    });

    // activation.entry should be the currently activated page, and
    // activation.from should be the page before restored from bfcache.
    assert_equals(activationData.entryURL, pageA.