GitLab

This reverts commit d49dcd89.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 836899 as the
culprit for flakes in the build cycles as shown on:
https://analysis.chromium.org/p/chromium/flake-portal/analysis/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vZDQ5ZGNkODk1ZGNkMjgwZjBlYWZlNTRkZTdiNWJkZGJkY2ZiZDFhNQw

Sample Failed Build: https://ci.chromium.org/b/8860879057915778784

Sample Failed Step: content_browsertests

Sample Flaky Test: All/DumpAccessibilityTreeTest.AccessibilityIframeAriaHidden/linux

Original change's description:
> Add tests to exercise hypertext on hidden iframes
> 
> TBR=kbabbitt@microsoft.com
> 
> Bug: None
> Change-Id: I14d580e7e20409fdf2ecc4d8a9294076f11ec07d
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2584562
> Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
> Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#836899}


Change-Id: I79641c036c742b0d893e91dc2fb5f69d4e0278cf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: None
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2592395
Cr-Commit-Position: refs/heads/master@{#836973}