This crash occurs very frequently on android and mac platforms and is likely preventing the fuzzer marty_html_twiddler from making much progress. Fixing this will allow more bugs to be found.

Marking this bug as a blocker for next Beta release.

If this is incorrect, please add ClusterFuzz-Wrong label and remove the ReleaseBlock-Beta label.

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/959f90b7745c52fd4b89873660baa10be996659c (CSS: Remove support for position values with 3 parts).

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label. If you aren't the correct owner for this issue, please unassign yourself as soon as possible so it can be re-triaged.

I doubt this was my change. 

ClusterFuzz has detected this issue as fixed in range 552222:552233.

Detailed report: https://clusterfuzz.com/testcase?key=6324069054808064

Fuzzer: marty_html_twiddler
Job Type: mac_asan_chrome
Platform Id: mac

Crash Type: CHECK failure
Crash Address: 
Crash State:
  media_context_provider in video_frame_resource_provider.cc
  blink::VideoFrameResourceProvider::Initialize
  void base::internal::ReplyAdapter<media::GpuVideoAcceleratorFactories*, media::G
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=550914:550915
Fixed: https://clusterfuzz.com/revisions?job=mac_asan_chrome&range=552222:552233

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6324069054808064

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 6324069054808064 is verified as fixed, so closing issue as verified.

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