Automatically adding ccs based on suspected regression changelists:

Rename GetLayout()/GetLayoutBlock() to UpdateLayout()/UpdateBlockLayout() by dcheng@chromium.org - https://chromium.googlesource.com/chromium/src/+/ed375c02e956ef832e8ed6223435f0d78d6bdf77

Image Capture: replace OriginTrialEnable with RuntimeEnable and mark it 'stable' by mcasas@chromium.org - https://chromium.googlesource.com/chromium/src/+/44e0ad0c40c920ab5259514c5ea262c8bd7cd5a5

If this is incorrect, please let us know why and apply the Test-Predator-Wrong-CLs label.

Testcase 5313072315760640 is a top crash on ClusterFuzz for mac platform. Please prioritize fixing this crash.

Marking this crash as a Beta release blocker.

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

As this is a document supplement, I suspect it can be called on a document after it's been detached from a frame. In that case, deferencing frame here will crash: https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/picture_in_picture/PictureInPictureController.cpp?rcl=2768203553deae4587be1b6840b4e06f02f8c870&l=54

Francois or Mounir, do you mind taking a look at this? The fix is easy enough, but I don't know enough about the API to write a test.

M65 Beta promotion is coming soon and your bug is labelled as Beta ReleaseBlock, pls make sure to land the fix and request a merge to M65 branch 3325 ASAP (merge has to be done latest by Monday, 02/05 @ 1:00 PM PT). Thank you.

Dropping Beta-Blocker and M-65 as this code has landed in M66. I have issues looking at the clusterfuzz website so I can't confirm if the issue is on the bug report or clusterfuzz itself.

The WIP CL is available at https://chromium-review.googlesource.com/c/chromium/src/+/898982

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/de5671d5ab239e09e1e4548a2d8e1a42e404478b

commit de5671d5ab239e09e1e4548a2d8e1a42e404478b
Author: François Beaufort <beaufort.francois@gmail.com>
Date: Wed Feb 07 13:27:29 2018

[Picture-in-Picture] Fix crash when document is detached from a frame.

Bug:  807752 ,  806249 
Change-Id: Ia6d396ab7bb931c4ef5195422c38b8eb2156250e
Reviewed-on: https://chromium-review.googlesource.com/898982
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Reviewed-by: apacible <apacible@chromium.org>
Cr-Commit-Position: refs/heads/master@{#534994}
[modify] https://crrev.com/de5671d5ab239e09e1e4548a2d8e1a42e404478b/third_party/WebKit/Source/modules/picture_in_picture/HTMLVideoElementPictureInPicture.cpp
[modify] https://crrev.com/de5671d5ab239e09e1e4548a2d8e1a42e404478b/third_party/WebKit/Source/modules/picture_in_picture/PictureInPictureController.cpp
[modify] https://crrev.com/de5671d5ab239e09e1e4548a2d8e1a42e404478b/third_party/WebKit/Source/modules/picture_in_picture/PictureInPictureController.h

ClusterFuzz has detected this issue as fixed in range 534993:534994.

Detailed report: https://clusterfuzz.com/testcase?key=5313072315760640

Fuzzer: inferno_twister_c
Job Type: linux_ubsan_vptr_content_shell_drt
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000000
Crash State:
  blink::Frame::IsFeatureEnabled
  blink::PictureInPictureController::GetStatus
  blink::PictureInPictureController::PictureInPictureEnabled
  
Sanitizer: undefined (UBSAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=463867:463893
Fixed: https://clusterfuzz.com/revisions?job=linux_ubsan_vptr_content_shell_drt&range=534993:534994

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5313072315760640

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 5313072315760640 is verified as fixed, so closing issue as verified.

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