Find it did not provide any possible suspects. Assigning to the concern owner from CL --
https://chromium.googlesource.com/chromium/src/+log/d28b98c7245514faadb3717413b8797d4451c3be..15e05a11237a95bea52cd48efe20b2c6795bb23a?pretty=fuller

Suspecting the following Commit#
https://chromium.googlesource.com/chromium/src/+/2b57ae8716a7b6e19c1f9928c9c8a4551d472fb2

@yhirano -- Could you please look into the issue, kindly re-assign if this is not related to your change.
Thank You.

ClusterFuzz has detected this issue as fixed in range 435871:435874.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=6277322010525696

Fuzzer: inferno_webbot
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: CHECK failure
Crash Address: 
Crash State:
  isLoading() in FontResource.cpp
  blink::FontResource::startLoadLimitTimers
  blink::RemoteFontFaceSource::beginLoadIfNeeded
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=mac_asan_chrome&range=435591:435598
Fixed: https://cluster-fuzz.appspot.com/revisions?job=mac_asan_chrome&range=435871:435874

Minimized Testcase (0.09 Kb):
Download: https://cluster-fuzz.appspot.com/download/AMIfv94jMywyD-wQb6Kcy7FPmYIXoKn02mRK5eVxnSvlIPl3W0ldIQi2_0a5l5Eujayz4GBuLP0gNejIyG0z4VHZKOtcImTor7fKBx8WtTeqq2C-zRbX_fZSLU3FUD4dXFB6TEp2liVZMZJGhOMPgbXwAU7tKyROCg?testcase_id=6277322010525696
<script>
window.open("http://tayroc.com");
window.location = "http://raccareers.net";</script>


See https://dev.chromium.org/Home/chromium-security/bugs/reproducing-clusterfuzz-bugs for more information.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase is verified as fixed, closing issue.

If this is incorrect, please add ClusterFuzz-Wrong label and re-open the issue.