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/+/165c8900c953f1bae6f8fb2d0b548ed4f11d4032 (Form-associated custom elements: Implement HTMLElement.prototype.attachInternals().).

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.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/69c7807c6de739328bcc8532b903f52769dbd0b9

commit 69c7807c6de739328bcc8532b903f52769dbd0b9
Author: Kent Tamura <tkent@chromium.org>
Date: Tue Nov 20 06:13:27 2018

Form-associated custom elements: Fix a crash with documents without browsing context.

CustomElement::Registry() can return nullptr.

Bug:  906704 
Change-Id: I5f3f87266526c97489b658668e15a38069fef033
Reviewed-on: https://chromium-review.googlesource.com/c/1343412
Reviewed-by: Hayato Ito <hayato@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609613}
[modify] https://crrev.com/69c7807c6de739328bcc8532b903f52769dbd0b9/third_party/WebKit/LayoutTests/custom-elements/tentative/HTMLElement-attachInternals.html
[modify] https://crrev.com/69c7807c6de739328bcc8532b903f52769dbd0b9/third_party/blink/renderer/core/html/html_element.cc

ClusterFuzz has detected this issue as fixed in range 609610:609613.

Detailed report: https://clusterfuzz.com/testcase?key=4656216703500288

Fuzzer: inferno_twister
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000028
Crash State:
  blink::CustomElementRegistry::DefinitionForName
  blink::HTMLElement::attachInternals
  blink::V8HTMLElement::attachInternalsMethodCallback
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=609230:609234
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=609610:609613

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=4656216703500288

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 4656216703500288 is verified as fixed, so closing issue as verified.

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