Testexpectations: Add back a line for a flaky test
Testexpectations: Add back a line for a flaky test

This line was commented out in http://crrev.com/122463005
And removed (incorrectly) by auto-rebaseline bot in:
http://crrev.com/134313003

BUG=331619
R=jzern@chromium.org

Review URL: https://codereview.chromium.org/137403003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@165010 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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