compared to release mode. See: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=%20css2.1%2Ft1508-c527-font-05-b.html%20css2.1%2Ft1508-c527-font-10-c.html%20fast%2Ftext%2Finternational%2Fthai-line-breaks.html%20fast%2Ftext%2Finternational%2Fthai-baht-space.html%20css1%2Ffont_properties%2Ffont.html%20&showExpectations=true&group=%40ToT%20-%20chromium.org css2.1/t1508-c527-font-05-b.html css2.1/t1508-c527-font-10-c.html fast/text/international/thai-line-breaks.html fast/text/international/thai-baht-space.html css1/font_properties/font.html
These tests are failing on Mac Release Tests on build.webkit.org. So maybe this is not tied to Release/Debug differences.
http://build.webkit.org/results/Chromium%20Mac%20Release%20(Tests)/r88434%20(8018)/results.html
Removed debug from 3 tests in http://trac.webkit.org/changeset/88436.
Removed a few of these which are not failing in http://trac.webkit.org/changeset/109420
Marking test failures as WontFix. Bug is still accessible and recording in TestExpectations.