[chromium] Mark flaky test.
https://bugs.webkit.org/show_bug.cgi?id=113129

Unreviewed, test expectations updates.

* platform/chromium/TestExpectations:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@146716 268f45cc-cd09-0410-ab3c-d52691b4dbfc