Remove timeout expectations for some http tests on XP
Remove timeout expectations for some http tests on XP

Blink r200483 seems to have fixed them.

BUG=518984,520193

Review URL: https://codereview.chromium.org/1289793004

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@200534 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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