Findit identified the culprit r572253 with confidence 82.8% in the config "chromium.linux / Linux Tests (dbg)(1)(32)"
based on the flakiness trend:

https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVyuwELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKEAWNocm9taXVtLmxpbnV4L0xpbnV4IFRlc3RzIChkYmcpKDEpKDMyKS81MTExMC9oZWFkbGVzc19icm93c2VydGVzdHMvU0dWaFpHeGxjM05RY205MGIyTnZiRUp5YjNkelpYSlVaWE4wTGxacGNuUjFZV3hVYVcxbFJYSnliM0pNYjI5dwwLEhNNYXN0ZXJGbGFrZUFuYWx5c2lzGAEM

If the culprit above is wrong, please file a bug using this link and hit submit:
https://bugs.chromium.org/p/chromium/issues/entry?status=Unconfirmed&labels=Pri-1,Test-Findit-Wrong&components=Tools%3ETest%3EFindit%3EFlakiness&summary=%5BFindit%5D%20Flake%20Analyzer%20-%20Wrong%20result%20for%20HeadlessProtocolBrowserTest.VirtualTimeErrorLoop&comment=Link%20to%20Analysis%3A%20https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVyuwELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKEAWNocm9taXVtLmxpbnV4L0xpbnV4IFRlc3RzIChkYmcpKDEpKDMyKS81MTExMC9oZWFkbGVzc19icm93c2VydGVzdHMvU0dWaFpHeGxjM05RY205MGIyTnZiRUp5YjNkelpYSlVaWE4wTGxacGNuUjFZV3hVYVcxbFJYSnliM0pNYjI5dwwLEhNNYXN0ZXJGbGFrZUFuYWx5c2lzGAEM

Automatically posted by the findit-for-me app (https://goo.gl/Ot9f7N).

Created a revert CL.
https://chromium-review.googlesource.com/c/chromium/src/+/1125480

It's now running in the bots.
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Linux%20Tests%20%28dbg%29%281%29%2832%29/51121

The test passed. Let me assign this to the author of the original CL.

Findit identified the culprit r572253 with confidence 70.0% in the config "chromium.linux / Linux Tests (dbg)(1)"
based on the flakiness trend:

https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVytwELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKAAWNocm9taXVtLmxpbnV4L0xpbnV4IFRlc3RzIChkYmcpKDEpLzczMDA0L2hlYWRsZXNzX2Jyb3dzZXJ0ZXN0cy9TR1ZoWkd4bGMzTlFjbTkwYjJOdmJFSnliM2R6WlhKVVpYTjBMbFpwY25SMVlXeFVhVzFsUlhKeWIzSk1iMjl3DAsSE01hc3RlckZsYWtlQW5hbHlzaXMYAQw

If the culprit above is wrong, please file a bug using this link and hit submit:
https://bugs.chromium.org/p/chromium/issues/entry?status=Unconfirmed&labels=Pri-1,Test-Findit-Wrong&components=Tools%3ETest%3EFindit%3EFlakiness&summary=%5BFindit%5D%20Flake%20Analyzer%20-%20Wrong%20result%20for%20HeadlessProtocolBrowserTest.VirtualTimeErrorLoop&comment=Link%20to%20Analysis%3A%20https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVytwELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKAAWNocm9taXVtLmxpbnV4L0xpbnV4IFRlc3RzIChkYmcpKDEpLzczMDA0L2hlYWRsZXNzX2Jyb3dzZXJ0ZXN0cy9TR1ZoWkd4bGMzTlFjbTkwYjJOdmJFSnliM2R6WlhKVVpYTjBMbFpwY25SMVlXeFVhVzFsUlhKeWIzSk1iMjl3DAsSE01hc3RlckZsYWtlQW5hbHlzaXMYAQw

Automatically posted by the findit-for-me app (https://goo.gl/Ot9f7N).

This seems to still be flaky? I got this on https://ci.chromium.org/p/chromium/builders/luci.chromium.try/win10_chromium_x64_rel_ng/46620

Yes, it looks like it started being flaky again, though possibly for different reasons, starting yesterday afternoon (9-Jul, roughly around r573374 - 573479, not an obvious regression window.

Disabling the test altogether, across all platforms.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8fd3114ea6bc6d647615732aafca4e2d1d00ca0c

commit 8fd3114ea6bc6d647615732aafca4e2d1d00ca0c
Author: Dirk Pranke <dpranke@chromium.org>
Date: Tue Jul 10 22:18:40 2018

Disable flaky HeadlessProtocolBrowserTest.VirtualTimeErrorLoop.

It looks like the test started becoming flaky across most platforms
yesterday afternoon (9-Jul, somewhere between r573370..r573480, though
there's not an obvious regression window).

TBR=kvitekp@chromium.org, pfeldman@chromium.org
BUG= 860123 

Change-Id: I144073f934cf6571d6864f858710cbd07c667059
Reviewed-on: https://chromium-review.googlesource.com/1132375
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573946}
[modify] https://crrev.com/8fd3114ea6bc6d647615732aafca4e2d1d00ca0c/headless/test/headless_protocol_browsertest.cc

Detected 3 new flakes for test/step "HeadlessProtocolBrowserTest.VirtualTimeErrorLoop". To see the actual flakes, please visit https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyOwsSBUZsYWtlIjBIZWFkbGVzc1Byb3RvY29sQnJvd3NlclRlc3QuVmlydHVhbFRpbWVFcnJvckxvb3AM. This message was posted automatically by the chromium-try-flakes app. Since flakiness is ongoing, the issue was moved back into Sheriff Bug Queue (unless already there).

Findit identified the culprit r573388 with confidence 70.0% in the config "chromium.linux / Linux Tests (dbg)(1)(32)"
based on the flakiness trend:

https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVyuwELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKEAWNocm9taXVtLmxpbnV4L0xpbnV4IFRlc3RzIChkYmcpKDEpKDMyKS81MTI3Ny9oZWFkbGVzc19icm93c2VydGVzdHMvU0dWaFpHeGxjM05RY205MGIyTnZiRUp5YjNkelpYSlVaWE4wTGxacGNuUjFZV3hVYVcxbFJYSnliM0pNYjI5dwwLEhNNYXN0ZXJGbGFrZUFuYWx5c2lzGAEM

If the culprit above is wrong, please file a bug using this link and hit submit:
https://bugs.chromium.org/p/chromium/issues/entry?status=Unconfirmed&labels=Pri-1,Test-Findit-Wrong&components=Tools%3ETest%3EFindit%3EFlakiness&summary=%5BFindit%5D%20Flake%20Analyzer%20-%20Wrong%20result%20for%20HeadlessProtocolBrowserTest.VirtualTimeErrorLoop&comment=Link%20to%20Analysis%3A%20https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVyuwELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKEAWNocm9taXVtLmxpbnV4L0xpbnV4IFRlc3RzIChkYmcpKDEpKDMyKS81MTI3Ny9oZWFkbGVzc19icm93c2VydGVzdHMvU0dWaFpHeGxjM05RY205MGIyTnZiRUp5YjNkelpYSlVaWE4wTGxacGNuUjFZV3hVYVcxbFJYSnliM0pNYjI5dwwLEhNNYXN0ZXJGbGFrZUFuYWx5c2lzGAEM

Automatically posted by the findit-for-me app (https://goo.gl/Ot9f7N).