[LayoutNG] Add NGLayoutInputNode::ListMarkerOccupiesWholeLine().

Bug: 878309
Cq-Include-Trybots: luci.chromium.try:linux_layout_tests_layout_ng
Change-Id: I961a8c962ca3b77b86a4cca37fdda81333ad8a88
Reviewed-on: https://chromium-review.googlesource.com/1194028
Reviewed-by: Koji Ishii <kojii@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586727}
3 files changed