Fix Retina and Mavericks NeedsRebaselines entries after r182114.

TBR=dsinclair@chromium.org

Review URL: https://codereview.chromium.org/543963004

git-svn-id: svn://svn.chromium.org/blink/trunk@182125 bbb929c8-8fbe-4397-9dbb-9b2b20218538