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/+/5d3212dab69f0b09168daaf14e3634e0a9d5ae62 (Stabilize LayoutSelection).

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/+/387d96762692aa943bef66e2753b39fc2167c8c2

commit 387d96762692aa943bef66e2753b39fc2167c8c2
Author: James Cook <jamescook@chromium.org>
Date: Mon Jul 30 15:51:27 2018

cros: Remove lock state methods from ash::ShellPort

We no longer have mash vs. classic configs in ash, and there's only one
implementation of ShellPort. As a step towards eliminating ShellPort,
remove the lock state methods from it.

Bug:  866425 
Test: ash_unittests
Change-Id: I8c02c89b62ef43a1f14727e0baae79d07ed3c4b5
Reviewed-on: https://chromium-review.googlesource.com/1153844
Reviewed-by: Michael Wasserman <msw@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579049}
[modify] https://crrev.com/387d96762692aa943bef66e2753b39fc2167c8c2/ash/shelf/shelf_layout_manager.cc
[modify] https://crrev.com/387d96762692aa943bef66e2753b39fc2167c8c2/ash/shelf/shelf_locking_manager.cc
[modify] https://crrev.com/387d96762692aa943bef66e2753b39fc2167c8c2/ash/shell_port.cc
[modify] https://crrev.com/387d96762692aa943bef66e2753b39fc2167c8c2/ash/shell_port.h
[modify] https://crrev.com/387d96762692aa943bef66e2753b39fc2167c8c2/ash/system/power/power_button_controller.cc
[modify] https://crrev.com/387d96762692aa943bef66e2753b39fc2167c8c2/ash/wm/lock_state_controller.cc
[modify] https://crrev.com/387d96762692aa943bef66e2753b39fc2167c8c2/ash/wm/lock_state_controller.h

ClusterFuzz has detected this issue as fixed in range 590633:590634.

Detailed report: https://clusterfuzz.com/testcase?key=5038778713112576

Fuzzer: marty_html_twiddler
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::FlatTreeTraversalNg::TraverseParent
  blink::LayoutSelection::Commit
  blink::LayoutView::CommitPendingSelection
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=577113:577114
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=590633:590634

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5038778713112576

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.