GitLab

This reverts commit ebe80ad0.

Reason for revert: Suspicious to break MSan Tests.
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Linux%20MSan%20Tests/11452

Original change's description:
> Wait for ukm entry in TryAutoplay
> 
> The test fails due to a race of UkmRecorder::AddEntry with DOMMessageQueue::Observe:
> https://cs.chromium.org/chromium/src/services/metrics/public/cpp/delegating_ukm_recorder.cc?q=src/services/metrics/public/cpp/delegating_ukm_recorder.cc&sq=package:chromium&g=0&l=137
> 
> Bug: 880217
> Change-Id: Icf099c3eb1094d8a571dc6f87b152e3c838807dc
> Reviewed-on: https://chromium-review.googlesource.com/1204011
> Reviewed-by: Tommi <tommi@chromium.org>
> Reviewed-by: Steven Holte <holte@chromium.org>
> Commit-Queue: Steven Holte <holte@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#589317}

TBR=tommi@chromium.org,holte@chromium.org,jochen@chromium.org,rkuksin@yandex-team.ru

Change-Id: I2c930e1d9ac74bd63ab876f06e494824fd4524d2
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 880217
Reviewed-on: https://chromium-review.googlesource.com/1212245Reviewed-by: Yuki Shiino <yukishiino@chromium.org>
Commit-Queue: Yuki Shiino <yukishiino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#589423}