suzyh, I think you had the last non-trivial change to that test -- are you able to help fix and/or find an appropriate owner for this? Thanks!

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/0bd200d2258900ca1e7f6e506be321eb59a5394f

commit 0bd200d2258900ca1e7f6e506be321eb59a5394f
Author: Ian Clelland <iclelland@google.com>
Date: Tue Aug 22 18:53:28 2017

Mark animations-parsing.html layout test as flaky.

The test has been failing more-or-less consistently on the Linux Trusty
bot.

Bug:  757868 
Change-Id: Ia05d5fd66e82ac55aab2e630af7de1851b74cb75
TBR: suzyh@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/626481
Commit-Queue: Ian Clelland <iclelland@chromium.org>
Reviewed-by: Ian Clelland <iclelland@chromium.org>
Cr-Commit-Position: refs/heads/master@{#496389}
[modify] https://crrev.com/0bd200d2258900ca1e7f6e506be321eb59a5394f/third_party/WebKit/LayoutTests/TestExpectations

Marking as available since suzyh has left the style team.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/81f1db3401e52e8fc1415ec403efe9eab37278a5

commit 81f1db3401e52e8fc1415ec403efe9eab37278a5
Author: Eric Willigers <ericwilligers@chromium.org>
Date: Wed Oct 11 17:56:02 2017

CSS Animations/Transitions: use testharness for parsing tests

The parsing tests previously used shouldBe, which requires an eval of each argument.

The tests have been flaky.

BUG= 757868 

Change-Id: I0d7bc8a58a4ba15baab9103c8f4f104c1f74fcb2
Reviewed-on: https://chromium-review.googlesource.com/706877
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Bugs Nash <bugsnash@chromium.org>
Cr-Commit-Position: refs/heads/master@{#508028}
[delete] https://crrev.com/e4159d97a69759595319b3a48e9b93e0fec9b9eb/third_party/WebKit/LayoutTests/animations/animations-parsing-expected.txt
[modify] https://crrev.com/81f1db3401e52e8fc1415ec403efe9eab37278a5/third_party/WebKit/LayoutTests/animations/animations-parsing.html
[delete] https://crrev.com/e4159d97a69759595319b3a48e9b93e0fec9b9eb/third_party/WebKit/LayoutTests/compositing/will-change/parse-will-change-expected.txt
[modify] https://crrev.com/81f1db3401e52e8fc1415ec403efe9eab37278a5/third_party/WebKit/LayoutTests/compositing/will-change/parse-will-change.html
[modify] https://crrev.com/81f1db3401e52e8fc1415ec403efe9eab37278a5/third_party/WebKit/LayoutTests/transitions/transitions-parsing-expected.txt
[modify] https://crrev.com/81f1db3401e52e8fc1415ec403efe9eab37278a5/third_party/WebKit/LayoutTests/transitions/transitions-parsing.html

Moving from shouldBe (eval) to testharness has reduced the flakes, but flakes remain.

The attacment shows the recent improvement.

The test files can be sharded to avoid the timeouts.

Deleted: parsing-flakiness.pdf 168 KB

parsing-flakiness.pdf 168 KB Download

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a1df55b72d2347277c36c0c1a39f578292f4c915

commit a1df55b72d2347277c36c0c1a39f578292f4c915
Author: Eric Willigers <ericwilligers@chromium.org>
Date: Tue Oct 17 03:19:08 2017

Shard transitions/transitions-parsing.html

The test has taken 10s to run in recent debug builds.

We shard the test to avoid virtual/threaded flakes.

BUG= 757868 

Change-Id: Ic2c796d7896ed3211caf161575a3fca3295e278d
Reviewed-on: https://chromium-review.googlesource.com/720657
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Reviewed-by: Bugs Nash <bugsnash@chromium.org>
Cr-Commit-Position: refs/heads/master@{#509262}
[add] https://crrev.com/a1df55b72d2347277c36c0c1a39f578292f4c915/third_party/WebKit/LayoutTests/transitions/transitions-parsing-001.html
[add] https://crrev.com/a1df55b72d2347277c36c0c1a39f578292f4c915/third_party/WebKit/LayoutTests/transitions/transitions-parsing-002.html
[add] https://crrev.com/a1df55b72d2347277c36c0c1a39f578292f4c915/third_party/WebKit/LayoutTests/transitions/transitions-parsing-003.html
[add] https://crrev.com/a1df55b72d2347277c36c0c1a39f578292f4c915/third_party/WebKit/LayoutTests/transitions/transitions-parsing-004.html
[add] https://crrev.com/a1df55b72d2347277c36c0c1a39f578292f4c915/third_party/WebKit/LayoutTests/transitions/transitions-parsing-005-expected.txt
[add] https://crrev.com/a1df55b72d2347277c36c0c1a39f578292f4c915/third_party/WebKit/LayoutTests/transitions/transitions-parsing-005.html
[delete] https://crrev.com/dbae6909a3db07237e39bc1b9894f14b42f855ee/third_party/WebKit/LayoutTests/transitions/transitions-parsing-expected.txt
[delete] https://crrev.com/dbae6909a3db07237e39bc1b9894f14b42f855ee/third_party/WebKit/LayoutTests/transitions/transitions-parsing.html

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/69eba886f47efdb4976a9285f4499ec0920996cc

commit 69eba886f47efdb4976a9285f4499ec0920996cc
Author: Eric Willigers <ericwilligers@chromium.org>
Date: Fri Oct 20 00:40:47 2017

Shard animations/animations-parsing.html

The test has taken more than ten seconds to run in recent
debug builds.

We shard the test to avoid flakes, for example when running
under virtual/threaded.

BUG= 757868 

Change-Id: I0ca84820bafb5be00c3f39a0aa4dc95d45134be2
Reviewed-on: https://chromium-review.googlesource.com/722480
Reviewed-by: Bugs Nash <bugsnash@chromium.org>
Commit-Queue: Eric Willigers <ericwilligers@chromium.org>
Cr-Commit-Position: refs/heads/master@{#510271}
[modify] https://crrev.com/69eba886f47efdb4976a9285f4499ec0920996cc/third_party/WebKit/LayoutTests/TestExpectations
[add] https://crrev.com/69eba886f47efdb4976a9285f4499ec0920996cc/third_party/WebKit/LayoutTests/animations/animations-parsing-001.html
[add] https://crrev.com/69eba886f47efdb4976a9285f4499ec0920996cc/third_party/WebKit/LayoutTests/animations/animations-parsing-002.html
[add] https://crrev.com/69eba886f47efdb4976a9285f4499ec0920996cc/third_party/WebKit/LayoutTests/animations/animations-parsing-003.html
[add] https://crrev.com/69eba886f47efdb4976a9285f4499ec0920996cc/third_party/WebKit/LayoutTests/animations/animations-parsing-004.html
[add] https://crrev.com/69eba886f47efdb4976a9285f4499ec0920996cc/third_party/WebKit/LayoutTests/animations/animations-parsing-005.html
[delete] https://crrev.com/140f8ce04cc4ee5d4b3ca2eb83888d2452a1f43b/third_party/WebKit/LayoutTests/animations/animations-parsing.html