Unable to find the culprit using the CL and Code Search.
Find it also did not provide any possible suspect.
Assigning to the owner who previously worked on similar Bug:  619000 .
@ikilpatrick -- Could you please look into the issue, pardon me if it has nothing to do with your changes and if possible please assign it to concern owner.

ClusterFuzz has detected this issue as fixed in range 398017:398351.

Detailed report: https://cluster-fuzz.appspot.com/testcase?key=5269371618590720

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_lsan_chrome_mp
Platform Id: linux

Crash Type: UNKNOWN READ
Crash Address: 0x000000000000
Crash State:
  blink::ScriptState::from
  blink::messageHandlerInMainThread
  v8::internal::MessageHandler::ReportMessage
  
Regressed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=397953:397956
Fixed: https://cluster-fuzz.appspot.com/revisions?job=linux_lsan_chrome_mp&range=398017:398351

Minimized Testcase (0.33 Kb): https://cluster-fuzz.appspot.com/download/AMIfv95iaUl6LI3H-DvK3CAeFuLsTsKykXpw3oEe5-ZcC-aXEyNUnzdwEnMKO42cUNFKrdnVmKGW4UUqis3fmlNS9aAKTEGv1WBX3qYr1RpJzF8nXndk2iQETZGkk54NrafKs8uFjuUD66Aw0iRI7E8uH5q_3I2Eag?testcase_id=5269371618590720

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.

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