Predator and CL could not provide any possible suspects.
Using code search for the file, "ref_counted.cc" assigning to the concern owner who might be related.

Suspecting Commit# https://chromium.googlesource.com/chromium/src/+/ee96d561c0b6d4933f94ef181e8e0e8cc03b2d62

jbroman@-- Could you please look into the issue, kindly re-assign if this is not related to your changes.


Thank You.

ClusterFuzz has detected this issue as fixed in range 507082:507121.

Detailed report: https://clusterfuzz.com/testcase?key=5380141340688384

Fuzzer: inferno_layout_test_unmodified
Job Type: windows_asan_content_shell
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000004
Crash State:
  base::subtle::RefCountedThreadSafeBase::HasOneRef
  base::internal::WeakReferenceOwner::GetRef
  base::SupportsWeakPtr<media::WebMediaPlayerImpl>::AsWeakPtr
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=506404:506471
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_content_shell&range=507082:507121

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5380141340688384

See https://github.com/google/clusterfuzz-tools 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 5380141340688384 is verified as fixed, so closing issue as verified.

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