This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = Unhandled rejection: We do not support keydown and keyup mixed with other actions, please use test_driver.send_keys. See crbug.com/893480.
[FAIL] Tests that the mouse events with some keys pressed.
assert_true: Timed out waiting for pointermove expected true got false
Harness: the test ran to completion.