Predator and CL could not provide any possible suspects.
Using the code search for the file, “TransitionInterpolation.h” assigning to concern owner from GIT blame.

Suspecting Commit#
https://chromium.googlesource.com/chromium/src/+/5d0ea979f0ba87655b7ef0e03b58fa3c04986ba6
@tzik -- Could you please look into this issue, kindly reassign if it has nothing to do with your changes.
Thank You.

Unrelated.

Unable to provide possible suspect using Predator, CL and Code Search.
Could someone please look into the issue.
Thank You.

ClusterFuzz has detected this issue as fixed in range 505471:505480.

Detailed report: https://clusterfuzz.com/testcase?key=4999409619435520

Fuzzer: ifratric-browserfuzzer-v3
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::TransitionInterpolation::TransitionInterpolation
  blink::TransitionInterpolation::Create
  blink::TransitionKeyframe::PropertySpecificKeyframe::CreateInterpolation
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=504363:504398
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=505471:505480

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4999409619435520

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.

Automatically applying components based on information from OWNERS files. If this seems incorrect, please apply the Test-Predator-Wrong-Components label.

ClusterFuzz testcase 4999409619435520 is verified as fixed, so closing issue as verified.

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