Revert "[Sheriff] Disable flaky test CookiesClearedOnCloseAllBrowsers"

This reverts commit 4654b2e9273c9aebffdced1ebe1b3195928057fd.

Reason for revert: Flakiness has been fixed: crbug.com/931778

Original change's description:
> [Sheriff] Disable flaky test CookiesClearedOnCloseAllBrowsers
> 
> Disable NoSessionRestoreTest.CookiesClearedOnCloseAllBrowsers on
> Windows and Linux.
> 
> Bug: 931777
> TBR=chrisha@chromium.org
> 
> Change-Id: Ib9b2f3246f67d67df89a0d7d5a54fbc05c3abd08
> Reviewed-on: https://chromium-review.googlesource.com/c/1470994
> Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
> Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#631857}

TBR=rdevlin.cronin@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 931777
Change-Id: I49ce7a0a2d338f96e8780c8210085a1107e088fa
Reviewed-on: https://chromium-review.googlesource.com/c/1475174
Reviewed-by: Christian Dullweber <dullweber@chromium.org>
Commit-Queue: Christian Dullweber <dullweber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#632557}
1 file changed