Tests that timeout with errors like:

[7100:7924:0606/235612.761:ERROR:service_manager_context.cc(248)] Attempting to run unsupported native service: C:\b\s\w\ir\out\Debug_x64\chrome_renderer.service.exe

are likely caused by issue 651906. I'm slowly trying to get to the bottom of it. Also see issue 840369. I expect that any test suite that spins up sandboxed renderers will experience this problem.

Back Ref (in case this this ticket gets out of sync/inaccurate): crbug/818832

Also, looks like one of the dbg bots was fabulously added as an optional try bot via Gerrit UI or cmdline: "win10_chromium_x64_dbg_ng".  (Ref: crbug/848513)  Turns out I'm not the only one landing CLs that only break on the waterfall dbg bot after landing!

CC brucedawson for chrome-windows (might want to delegate re-enabling these disabled suites on the dbg Win bot).

CC awhalley fyi.

Thanks!

telemetry_unittests is frequently timing out on this bot:
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win10%20Tests%20x64%20%28dbg%29/1964

Probably the issue described in comment 1.

Available, but no owner or component? Please find a component, as no one will ever find this without one.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ec52747a5abc25a862843edca761104b3c319764

commit ec52747a5abc25a862843edca761104b3c319764
Author: Gabriel Charette <gab@chromium.org>
Date: Mon Jan 14 16:16:49 2019

[ui_controls] Unflake Send*NotifyWhenDone() on Windows

ui_controls::Send*NotifyWhenDone() can be flaky when invoked after
ui_controls::Send*() as the former can decide to notify based on
observing a yet-to-be-processed event from the latter (or even a
yet-to-be-processed event emitted by unrelated code) and thus notify too
early, resuming and testing conditions that have yet to be met.

Solution: defer the notification if the system queue has pending events
of the same type awaiting dispatch.

Note: mouse move can be repeated indefinitely during a drag, as such we
consider a mouse move complete when it hits the target regardless of
remaining mouse move messages in the queue.

@ BUG OWNERS : This might unflake many currently disabled tests. I've
CC'ed interactive_ui_tests + Windows bugs, please try to re-enable your
test after this CL if you think it might be related.

Bug:  892228 , 640996, 897801,893078,876224,875443,873110,852786,850343,848049,846695,840369,798492,756338,751031,665296,651906,499858,468660,419468,238347,131612,106489,97777,92467
Change-Id: I548856a3948ff71a145435799b4ba3e689561f14
Reviewed-on: https://chromium-review.googlesource.com/c/1392178
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622470}
[modify] https://crrev.com/ec52747a5abc25a862843edca761104b3c319764/chrome/browser/ui/views/bookmarks/bookmark_bar_view_test.cc
[modify] https://crrev.com/ec52747a5abc25a862843edca761104b3c319764/ui/base/test/ui_controls_internal_win.cc