  scoped_refptr<const NGPhysicalBoxFragment> RunBlockLayoutAlgorithm(
      Element* element) {
    NGBlockNode container(ToLayoutBox(element->GetLayoutObject()));
    NGConstraintSpace space = ConstructBlockLayoutTestConstraintSpace(
        WritingMode::kHorizontalTb, TextDirection::kLtr,
        LogicalSize(LayoutUnit(1000), kIndefiniteSize));
    return NGBaseLayoutAlgorithmTest::RunBlockLayoutAlgorithm(container, space);
  }

Unknown