The imported expectations file has a number of FAIL steps. All of them in the comparisons where the result of input.valueAsDate is expected to be a valid date instead of null. wpt.fyi page: https://wpt.fyi/results/html/semantics/forms/the-input-element/input-valueasdate.html?label=master&product=chrome%5Bexperimental%5D&product=firefox%5Bexperimental%5D&product=safari%5Bexperimental%5D&product=webkitgtk&aligned
<rdar://problem/65853055>
Test is passing after r267640.