With reference to the  Issue 903230 , assigning it to steimel@

ClusterFuzz has detected this issue as fixed in range 619628:619629.

Detailed report: https://clusterfuzz.com/testcase?key=5681942735093760

Fuzzer: ochang_domfuzzer
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000010
Crash State:
  blink::Node::GetLayoutBoxModelObject
  blink::MediaControlSliderElement::TrackWidth
  blink::MediaControlSliderElement::NotifyElementSizeChanged
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=550802:550806
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=619628:619629

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5681942735093760

See https://github.com/google/clusterfuzz-tools for instructions to reproduce this bug locally.

If you suspect that the result above is incorrect, try re-doing that job on the test case report page.

ClusterFuzz testcase 5681942735093760 is verified as fixed, so closing issue as verified.

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