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/+/14eeb1d5b6369a4fefa57973bf6b646469f72e35 (Migrate fullscreen to use top layer.).

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 cannot reproduce this. Tried exact build, build built locally at the change, high iteration count and a ToT build.

Rerunning the job on clusterfuzz to see if this is reproducible there.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/269321e37911fc1bdcc27c4bb311637fdf6fc995

commit 269321e37911fc1bdcc27c4bb311637fdf6fc995
Author: Dave Tapuska <dtapuska@chromium.org>
Date: Fri Jun 01 02:55:00 2018

Add some CHECKs to debug null derfef.

Add a few checks to debug a null-deref on clusterfuzz.

BUG= 848264 

Change-Id: If2569d972888e51224fcd4ddab834aaf1bb65d99
Reviewed-on: https://chromium-review.googlesource.com/1081203
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563504}
[modify] https://crrev.com/269321e37911fc1bdcc27c4bb311637fdf6fc995/third_party/blink/renderer/core/exported/web_plugin_container_impl.cc

ClusterFuzz has detected this issue as fixed in range 563501:563502.

Detailed report: https://clusterfuzz.com/testcase?key=5112262701088768

Fuzzer: inferno_layout_test_unmodified
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::WebPluginContainerImpl::EnqueueMessageEvent
  content::MessageChannel::PostMessageToJavaScriptImpl
  content::MessageChannel::DrainJSMessageQueue
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=563062:563065
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=563501:563502

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5112262701088768

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 5112262701088768 is verified as fixed, so closing issue as verified.

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

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/b16c163ced8a3dd8ea8cfcf25eac42e48ad9513b

commit b16c163ced8a3dd8ea8cfcf25eac42e48ad9513b
Author: Dave Tapuska <dtapuska@chromium.org>
Date: Fri Jun 01 13:13:26 2018

Revert "Add some CHECKs to debug null derfef."

This reverts commit 269321e37911fc1bdcc27c4bb311637fdf6fc995.

Reason for revert: Clusterfuzz no longer believes this is an issue.

Original change's description:
> Add some CHECKs to debug null derfef.
> 
> Add a few checks to debug a null-deref on clusterfuzz.
> 
> BUG= 848264 
> 
> Change-Id: If2569d972888e51224fcd4ddab834aaf1bb65d99
> Reviewed-on: https://chromium-review.googlesource.com/1081203
> Reviewed-by: David Bokan <bokan@chromium.org>
> Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#563504}

TBR=bokan@chromium.org,dtapuska@chromium.org

Change-Id: I8c45c2e1dfb3ff148028e9cb7de9a3ee9ce037dc
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug:  848264 
Reviewed-on: https://chromium-review.googlesource.com/1082452
Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#563604}
[modify] https://crrev.com/b16c163ced8a3dd8ea8cfcf25eac42e48ad9513b/third_party/blink/renderer/core/exported/web_plugin_container_impl.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/154859c26e051f2c5868e068120515cd095a8f00

commit 154859c26e051f2c5868e068120515cd095a8f00
Author: Dave Tapuska <dtapuska@chromium.org>
Date: Mon Jun 04 14:36:50 2018

Reland "Add some CHECKs to debug null derfef."

This is a reland of 269321e37911fc1bdcc27c4bb311637fdf6fc995

Original change's description:
> Add some CHECKs to debug null derfef.
> 
> Add a few checks to debug a null-deref on clusterfuzz.
> 
> BUG= 848264 
> 
> Change-Id: If2569d972888e51224fcd4ddab834aaf1bb65d99
> Reviewed-on: https://chromium-review.googlesource.com/1081203
> Reviewed-by: David Bokan <bokan@chromium.org>
> Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#563504}

Bug:  848264 
Change-Id: I38911e15ead406203028a74930c74bf0bd1dcbfd
Reviewed-on: https://chromium-review.googlesource.com/1084908
Reviewed-by: David Bokan <bokan@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#564085}
[modify] https://crrev.com/154859c26e051f2c5868e068120515cd095a8f00/third_party/blink/renderer/core/exported/web_plugin_container_impl.cc