Gardening: xmlhttprequest-timeout-worker-simple.html is flaky on Win
Gardening: xmlhttprequest-timeout-worker-simple.html is flaky on Win

BUG=311467
TBR=jsbell

Review URL: https://codereview.chromium.org/43103002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@160527 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs