GitLab

Use enum class instead of enum for BoxLayout::CrossAxisAlignment
enum class is more type safety.

Bug: 940736
Change-Id: I76bfd19f4b2b176e1c832590dce9c82c17d50093
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1605281Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Hwanseung Lee <hs1217.lee@samsung.com>
Cr-Commit-Position: refs/heads/master@{#659289}