Unreviewed Chromium rebaselines.

        Rebaseline fast/lists/001-vertical.html and fast/lists/008-vertical.html
        with the chromium-mac scrollbars.

        Rest of fast/lists/00*-vertical.html tests fail due to bug 48634,
        add them to that grouping.

        * platform/chromium-mac/fast/lists/001-vertical-expected.checksum: Added.
        * platform/chromium-mac/fast/lists/001-vertical-expected.png: Added.
        * platform/chromium-mac/fast/lists/008-vertical-expected.checksum: Added.
        * platform/chromium-mac/fast/lists/008-vertical-expected.png: Added.
        * platform/chromium/test_expectations.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@71789 268f45cc-cd09-0410-ab3c-d52691b4dbfc