fast/parser/block-nesting-cap.html is regularly on the cusp
        of exceeding the 12s timeout on the Chromium Windows Debug bot.
        Mark it slow to give it more time.

        * platform/chromium/test_expectations.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@70353 268f45cc-cd09-0410-ab3c-d52691b4dbfc