GitLab

This reverts commit 68335421.

Reason for revert:

Findit (https://goo.gl/kROfz5) identified CL at revision 680135 as the
culprit for flakes in the build cycles as shown on:
https://analysis.chromium.org/p/chromium/flake-portal/analysis/culprit?key=ag9zfmZpbmRpdC1mb3ItbWVyQwsSDEZsYWtlQ3VscHJpdCIxY2hyb21pdW0vNjgzMzU0MjEzMGQyODg4YzMxNDQ2ZjI0MGQxNjkwOGY0NWFiNjhjYQw

Sample Failed Build: https://ci.chromium.org/buildbot/chromium.chromiumos/linux-chromeos-dbg/13542

Sample Failed Step: browser_tests

Sample Flaky Test: PromiseResolverModuleTest.All

Original change's description:
> Web UI Polymer 3: Port tests for shared JS Modules
> 
> Port tests for the shared JS resources migrated to modules in
> https://crrev.com/c/1682889.
> 
> Note: Tests only run if optimize_webui is false, since these
> resources only exist in this case.
> 
> Bug: 965770
> Change-Id: Ia45584f59617165b3d230d551351ea51f3385add
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1703424
> Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
> Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#680135}


Change-Id: I90be6d4a72a24e15a0bbf7f7004aed32153b65a6
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 965770
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1716636
Cr-Commit-Position: refs/heads/master@{#680366}