Find it and CL did not provide any possible suspect.
Using code search for file "frameselection.cpp " from line #41 suspecting the below change
Review URL: https://codereview.chromium.org/2221783003

yosin@ - Could you please check if this is caused with respect to your change, if not please help us in reassign the issue to the right owner.

Thanks!

ClusterFuzz has detected this issue as fixed in range 453791:453840.

Detailed report: https://clusterfuzz.com/testcase?key=4944437076819968

Fuzzer: inferno_layout_test_unmodified
Job Type: windows_syzyasan_chrome
Platform Id: windows

Crash Type: UNKNOWN
Crash Address: 0x0000000b
Crash State:
  blink::Node::containsIncludingHostElements
  blink::computePositionForChildrenRemoval
  blink::FrameSelection::nodeChildrenWillBeRemoved
  
Memory Tool: SYZYASAN

Regressed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=440957:440968
Fixed: https://clusterfuzz.com/revisions?job=windows_syzyasan_chrome&range=453791:453840

Reproducer Testcase: https://clusterfuzz.com/download/AMIfv94NGIuC1ALUAernyE2KQy0Q9YUapr4VXYffNEb9GViUaEhfCzwvvO7urY147KlB5YahopVflJvUmk2mYG57IRshHwi6eShdER5fe2i98oKa4EQyoAjzu7rv-E283vDtKI9CuxVwq5ibcin2k_kgqQLnMkmy8BrovL2YVbqqOmB3ZKEtovWlAuY4OMVhJZvuAHOgXqX2PG-Ye_-KdqpwBp_WbfVLpIV4_yj5LmXhRMtbNfyNjwaT7QOwXAjNlUu-sWZUgXz_ERhi_YkaZe1PQ46LQWQRWqxedMFdqWn40tVqBXxKHGVhZLHjKxyNd1-ZBsY_BS2ryDo4eKok7Xt3qnBMsqZHvmMM89mq7DKESOxw5z4aIEQ?testcase_id=4944437076819968


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.