GitLab

This reverts commit f1fb6d61.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 610504 as the
culprit for flakes in the build cycles as shown on:
https://findit-for-me.appspot.com/waterfall/flake/flake-culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vZjFmYjZkNjE4YmVhYjE4MzBhMDg2YzQzYWNlZTVjM2MxYzhkODAyOAw

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.mac/Mac10.13%20Tests/6917

Sample Failed Step: webkit_layout_tests on Intel GPU on Mac on Mac-10.12.6

Sample Flaky Test: external/wpt/event-timing/event-timing-timingconditions.html

Original change's description:
> [EventTiming] Move tests to WPT
> 
> This CL moves Event Timing tests to web-platform-tests. Relevant changes:
> * Move to using test_driver.click.
> * Replace setTimeout with step_timeout.
> * Move to using a python-based slow image resource.
> 
> Bug: 841224
> Change-Id: I21f322546815d7d6bcec4dd1703de50a9296d992
> Reviewed-on: https://chromium-review.googlesource.com/c/1348855
> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
> Reviewed-by: Timothy Dresser <tdresser@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#610504}

Change-Id: Id18988562dc34b1686497c689605b8436760a10c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 841224, 907949
Reviewed-on: https://chromium-review.googlesource.com/c/1348732
Cr-Commit-Position: refs/heads/master@{#610512}