Findit identified the culprit r583954 with confidence 70.0% in the config "tryserver.chromium.mac / mac_chromium_rel_ng"
based on the flakiness trend:

https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVy5wELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKwAWNocm9taXVtLm1hYy9NYWMxMC4xMyBUZXN0cy80NzM1L3dlYmtpdF9sYXlvdXRfdGVzdHMgb24gSW50ZWwgR1BVIG9uIE1hYyBvbiBNYWMtMTAuMTIuNi9ZVzVwYldGMGFXOXVjeTlwYm5SbGNuQnZiR0YwYVc5dUwzTjJaeTF6ZEhKdmEyVXRaR0Z6YUdGeWNtRjVMV2x1ZEdWeWNHOXNZWFJwYjI0dWFIUnRiQT09DAsSE01hc3RlckZsYWtlQW5hbHlzaXMYAQw

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%20animations/interpolation/svg-stroke-dasharray-interpolation.html&comment=Link%20to%20Analysis%3A%20https://findit-for-me.appspot.com/waterfall/flake?key=ag9zfmZpbmRpdC1mb3ItbWVy5wELEhdNYXN0ZXJGbGFrZUFuYWx5c2lzUm9vdCKwAWNocm9taXVtLm1hYy9NYWMxMC4xMyBUZXN0cy80NzM1L3dlYmtpdF9sYXlvdXRfdGVzdHMgb24gSW50ZWwgR1BVIG9uIE1hYyBvbiBNYWMtMTAuMTIuNi9ZVzVwYldGMGFXOXVjeTlwYm5SbGNuQnZiR0YwYVc5dUwzTjJaeTF6ZEhKdmEyVXRaR0Z6YUdGeWNtRjVMV2x1ZEdWeWNHOXNZWFJwYjI0dWFIUnRiQT09DAsSE01hc3RlckZsYWtlQW5hbHlzaXMYAQw

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

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d798719831fb6652257a6184b7ec1d0681aab684

commit d798719831fb6652257a6184b7ec1d0681aab684
Author: Tien-Ren Chen <trchen@chromium.org>
Date: Fri Aug 17 23:40:25 2018

Disable flaky layout tests

animations/interpolation/svg-stroke-dasharray-interpolation.html
external/wpt/cookies/http-state/domain-tests.html

TBR=pdr@chromium.org
NOTRY=TRUE
BUG= 875170 , 875195 

Change-Id: I0ecce2b5c62e673ab3dadd3b5724c6fb827309ad
Reviewed-on: https://chromium-review.googlesource.com/1180468
Commit-Queue: Tien-Ren Chen <trchen@chromium.org>
Reviewed-by: Tien-Ren Chen <trchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584241}
[modify] https://crrev.com/d798719831fb6652257a6184b7ec1d0681aab684/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ec7e7e9c0cfaafd88546e89ad7d4d64faa6eec73

commit ec7e7e9c0cfaafd88546e89ad7d4d64faa6eec73
Author: Jennifer Apacible <apacible@chromium.org>
Date: Sat Aug 18 00:02:32 2018

Disable SequenceManagerFuzzerProcessorTest test on Linux.

Bug:  875170 
TBR: altimin@chromium.org
Change-Id: Ibf452c3fd02fba616e58d7fe9fb4377684126f67
Reviewed-on: https://chromium-review.googlesource.com/1180495
Reviewed-by: apacible <apacible@chromium.org>
Commit-Queue: apacible <apacible@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584247}
[modify] https://crrev.com/ec7e7e9c0cfaafd88546e89ad7d4d64faa6eec73/third_party/blink/renderer/platform/scheduler/base/sequence_manager_fuzzer_processor_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/af1f70197d593dc37e2bc98ca0e15bb6d6b7bd41

commit af1f70197d593dc37e2bc98ca0e15bb6d6b7bd41
Author: Farah Charab <farahcharab@google.com>
Date: Sat Aug 25 22:59:03 2018

Fuzzer: Enable PostToCreateThead for Linux.

Test disabled on Linux due to flakiness. However, it wasn't linked
to a relevant bug. Also, I run this for 2+ hours on a Linux
workstation and I got no failures. So, I am landing this unit test
again.

Bug:  875170 
Change-Id: Ic6719945d85c0d0e707aa809cbbb18d10ed9bfb3
Reviewed-on: https://chromium-review.googlesource.com/1188320
Commit-Queue: Farah Charab <farahcharab@chromium.org>
Reviewed-by: Alexander Timin <altimin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586154}
[modify] https://crrev.com/af1f70197d593dc37e2bc98ca0e15bb6d6b7bd41/third_party/blink/renderer/platform/scheduler/test/fuzzer/sequence_manager_fuzzer_processor_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b6e7e37341a7906a872f5ee54469c0c2ee2b6fc6

commit b6e7e37341a7906a872f5ee54469c0c2ee2b6fc6
Author: Xida Chen <xidachen@chromium.org>
Date: Tue Dec 04 22:00:40 2018

Deflake svg-stroke-dasharray-interpolation.html

Looking at the flakiness dashboard, it looks like this test times out
on dbg bots only (where the timeout limit is 18s). When it doesn't time
out, it takes 15-17s to finish the test.

The test itself contains 19 sub-tests, I think the proper solution is to
break the test into 2 tests, just like the "svg-d-interpolation" tests.

Bug:  875170 
Change-Id: Ic38b651061634b47ce66fb2e53033a61611a35ad
Reviewed-on: https://chromium-review.googlesource.com/c/1361595
Reviewed-by: Stephen McGruer <smcgruer@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613716}
[modify] https://crrev.com/b6e7e37341a7906a872f5ee54469c0c2ee2b6fc6/third_party/blink/web_tests/TestExpectations
[add] https://crrev.com/b6e7e37341a7906a872f5ee54469c0c2ee2b6fc6/third_party/blink/web_tests/animations/interpolation/svg-stroke-dasharray-interpolation-001.html
[rename] https://crrev.com/b6e7e37341a7906a872f5ee54469c0c2ee2b6fc6/third_party/blink/web_tests/animations/interpolation/svg-stroke-dasharray-interpolation-002.html