GitLab

The test is introduced and started flaking in https://ci.chromium.org/buildbot/chromium.webkit/WebKit%20Win10/38257.
Suspecting https://chromium-review.googlesource.com/1146764.

TBR=xidachen

Bug: 867181
Change-Id: I5a772c76e9b68fe6e1aaa7a0feb34cd03a57aa31
Reviewed-on: https://chromium-review.googlesource.com/1149156Reviewed-by: Derek Cheng <imcheng@chromium.org>
Commit-Queue: Derek Cheng <imcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577747}