Automatically applying components based on crash stacktrace and information from OWNERS files.

If this is incorrect, please apply the Test-Predator-Wrong-Components label.

Automatically assigning owner based on suspected regression changelist https://chromium.googlesource.com/chromium/src/+/68c4cdbe80c1a578c9321d2a98f61939fc54c39d (Allow for paint offset roots that don't have PaintLayers.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.

I think this was actually caused by the following commit:

https://chromium.googlesource.com/chromium/src/+/3e05d98d5234fd322d796e3b49d68da725a9c868

The proximate cause is that an anonymous LayoutBlockFlow induced by the
LayoutFullScreen returns null for GetNode().

Thanks Chris!

ClusterFuzz has detected this issue as fixed in range 514498:517702.

Detailed report: https://clusterfuzz.com/testcase?key=4709981143433216

Fuzzer: inferno_twister
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::Node::GetDocument
  blink::ThemePainter::PaintBorderOnly
  blink::BoxPainter::PaintBoxDecorationBackgroundWithRect
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=508795:508862
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=514498:517702

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4709981143433216

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.