The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4c3d1537ba0d12d7a40efb91e8e078d4c1e451eb

commit 4c3d1537ba0d12d7a40efb91e8e078d4c1e451eb
Author: tkent <tkent@chromium.org>
Date: Fri May 20 06:18:24 2016

Mark two tests flaky.

- imported/csswg-test/vendor-imports/mozilla/mozilla-central-reftests/variables/variable-external-font-face-01.html
- virtual/threaded/fast/scroll-behavior/main-frame-interrupted-scroll.html

BUG= 613462 ,  613463 
TBR=kojii@chromium.org
NOTRY=true

Review-Url: https://codereview.chromium.org/1998123002
Cr-Commit-Position: refs/heads/master@{#395015}

[modify] https://crrev.com/4c3d1537ba0d12d7a40efb91e8e078d4c1e451eb/third_party/WebKit/LayoutTests/TestExpectations

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8e0df8b8f93bab38a24a3c724b97ac8c79c436ad

commit 8e0df8b8f93bab38a24a3c724b97ac8c79c436ad
Author: wangxianzhu <wangxianzhu@chromium.org>
Date: Sat Jun 18 19:17:40 2016

Cleanup test expectations for  crbug.com/620126  and  crbug.com/574272 

The CL causing flakiness of JavaScript execution has been reverted for
 crbug.com/620126 . Bad rebaselines caused by  crbug.com/620126  and
 crbug.com/574272  can be rebaselined again.

BUG= 574272 , 620126 , 619983 , 621024 , 621025 , 620141 , 613463 , 612874 
TBR=wangxianzhu@chromium.org

Review-Url: https://codereview.chromium.org/2079993002
Cr-Commit-Position: refs/heads/master@{#400595}

[modify] https://crrev.com/8e0df8b8f93bab38a24a3c724b97ac8c79c436ad/third_party/WebKit/LayoutTests/TestExpectations

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Looks like the CL in #3 removed the test from TestExpectations and we haven't heard anything since so it looks ok now.