Predator and CL could not provide any possible suspects.
Using the code search for the file, “TaskRunnerHelper.cpp” assigning to concern owner from GIT blame.
Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/905a5fd6040cc73a6adaff129faa5bf0b1edfc2a

@nhiroki -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thank You.

ClusterFuzz has detected this issue as fixed in range 502702:502752.

Detailed report: https://clusterfuzz.com/testcase?key=6509815164829696

Fuzzer: lcamtuf_cross_fuzz
Job Type: windows_asan_chrome
Platform Id: windows

Crash Type: Null-dereference READ
Crash Address: 0x00000000
Crash State:
  blink::TaskRunnerHelper::Get
  blink::TimedCanvasDrawListener::TimedCanvasDrawListener
  blink::TimedCanvasDrawListener::Create
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=windows_asan_chrome&range=502379:502432
Fixed: https://clusterfuzz.com/revisions?job=windows_asan_chrome&range=502702:502752

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6509815164829696

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 6509815164829696 is verified as fixed, so closing issue as verified.

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