macviews: use invert for high contrast menu selection

This is more Mac-y, not less visible, and considerably prettier than the old
approach of painting an extra inner border stroke.

Bug: 831769
Change-Id: I1b68b7e1b0e031121de1850709b261331264d3f6
Reviewed-on: https://chromium-review.googlesource.com/1143445
Reviewed-by: Sidney San Martín <sdy@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576570}
1 file changed