Mark flaky battery-status tests in TestExpectations
Mark flaky battery-status tests in TestExpectations

TBR=timvolodine@chromium.org
BUG=384396

Review URL: https://codereview.chromium.org/343683003

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@176450 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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