Looks like it almost passes: https://ci.chromium.org/p/chromium/builders/luci.chromium.try/cast_shell_linux/88551

My guess is it just needs a

  data = [
    "//media/test/data/",
  ]


in browsertests in chromecast/browser/BUILD.gn. I'll give that a try.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e963ab6ec7d45fe25997828f68b495a6ab583366

commit e963ab6ec7d45fe25997828f68b495a6ab583366
Author: Nico Weber <thakis@chromium.org>
Date: Mon Jul 09 17:21:53 2018

Run cast_shell_browsertests on swarming.

Bug: 861753
Change-Id: Ib3b69cc03c2e50f531d612aa0f83ef4e3cb817aa
Reviewed-on: https://chromium-review.googlesource.com/1129321
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573350}
[modify] https://crrev.com/e963ab6ec7d45fe25997828f68b495a6ab583366/chromecast/browser/BUILD.gn
[modify] https://crrev.com/e963ab6ec7d45fe25997828f68b495a6ab583366/testing/buildbot/chromium.linux.json
[modify] https://crrev.com/e963ab6ec7d45fe25997828f68b495a6ab583366/testing/buildbot/test_suite_exceptions.pyl

Nico, cast_shell_browsertests started intermittently failing on the run with this CL included (https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Cast%20Linux/55533).

Failure: https://logs.chromium.org/v/?s=chromium%2Fbuildbucket%2Fcr-buildbucket.appspot.com%2F8941458616937468304%2F%2B%2Fsteps%2Fcast_shell_browsertests%2F0%2Flogs%2FCastFeaturesBrowserTest.TestOnlyWellFormedFeaturesPersisted%2F0

Is it safe to revert the CL assuming that you don't see an immediate fix?

My guess is that some dependency is not properly expressed. Perhaps this? https://cs.chromium.org/chromium/src/chromecast/browser/cast_content_browser_client.cc?q=kGpuNoCont&sq=package:chromium&g=0&l=443

Yeah, save to revert.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/629091a1e0f5089e143f947766ac7be9e7bdf44b

commit 629091a1e0f5089e143f947766ac7be9e7bdf44b
Author: Colin Blundell <blundell@chromium.org>
Date: Tue Jul 10 14:50:28 2018

Revert "Run cast_shell_browsertests on swarming."

This reverts commit e963ab6ec7d45fe25997828f68b495a6ab583366.

Reason for revert: Causes cast_shell_browsertests to intermittently fail (see https://bugs.chromium.org/p/chromium/issues/detail?id=861753#c5).

Original change's description:
> Run cast_shell_browsertests on swarming.
> 
> Bug: 861753
> Change-Id: Ib3b69cc03c2e50f531d612aa0f83ef4e3cb817aa
> Reviewed-on: https://chromium-review.googlesource.com/1129321
> Reviewed-by: Luke Halliwell <halliwell@chromium.org>
> Reviewed-by: Kenneth Russell <kbr@chromium.org>
> Commit-Queue: Nico Weber <thakis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#573350}

TBR=thakis@chromium.org,kbr@chromium.org,halliwell@chromium.org

Change-Id: Iebfc1c8230f1671c2cca81a0e9144ef55c069fac
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 861753
Reviewed-on: https://chromium-review.googlesource.com/1131435
Reviewed-by: Colin Blundell <blundell@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#573723}
[modify] https://crrev.com/629091a1e0f5089e143f947766ac7be9e7bdf44b/chromecast/browser/BUILD.gn
[modify] https://crrev.com/629091a1e0f5089e143f947766ac7be9e7bdf44b/testing/buildbot/chromium.linux.json
[modify] https://crrev.com/629091a1e0f5089e143f947766ac7be9e7bdf44b/testing/buildbot/test_suite_exceptions.pyl

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/da3f703063b9200918c1ae426ba4ea68e9ee6555

commit da3f703063b9200918c1ae426ba4ea68e9ee6555
Author: Nico Weber <thakis@chromium.org>
Date: Wed Jul 11 14:34:27 2018

Add comments explaining why the cast bots run two test suites unswarmed.

Also add a data dep that's necessary (but apparently not sufficient) for
cast_shell_browsertests to run on swarming.

Bug: 861753,  861843 
Change-Id: Ib10a8589c1349ac70dc4d4358395af6b2867d16b
Reviewed-on: https://chromium-review.googlesource.com/1133201
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Commit-Queue: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574156}
[modify] https://crrev.com/da3f703063b9200918c1ae426ba4ea68e9ee6555/chromecast/browser/BUILD.gn
[modify] https://crrev.com/da3f703063b9200918c1ae426ba4ea68e9ee6555/testing/buildbot/test_suite_exceptions.pyl

fix component