Unreviewed; test expectations update.

        [Chromium] Update chromium-gpu test expectations.  Most of this 
        consists of updates to the shared canvas section.  The rest adds
        a failing test on windows, and some timeouts on mac.  The canvas2D
        tests are skipped again on the Mac, since accelerated canvas 2D
        has not been implemented yet, so there's no point in rebaselining.

        * platform/chromium-gpu/test_expectations.txt:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@71245 268f45cc-cd09-0410-ab3c-d52691b4dbfc