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

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

 Issue 810630  has been merged into this issue.

restarted the task to redo regression and find minimum test case. the duplicate issue does have one though.

Can reproduce in Release with https://clusterfuzz.com/download?testcase_id=6579234412429312

https://chromium-review.googlesource.com/c/chromium/src/+/911031

ClusterFuzz has detected this issue as fixed in range 535905:535934.

Detailed report: https://clusterfuzz.com/testcase?key=6579234412429312

Fuzzer: attekett_dom_fuzzer
Job Type: linux_cfi_chrome
Platform Id: linux

Crash Type: Null-dereference READ
Crash Address: 0x000000000008
Crash State:
  chrome
  blink::CachedMatchedProperties::Clear
  blink::MatchedPropertiesCache::Clear
  
Sanitizer: cfi (CFI)

Regressed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=535294:535307
Fixed: https://clusterfuzz.com/revisions?job=linux_cfi_chrome&range=535905:535934

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=6579234412429312

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 6579234412429312 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/+/3bb914721da18dc40bf44a39dcec5b30ef486b4b

commit 3bb914721da18dc40bf44a39dcec5b30ef486b4b
Author: Rune Lillesveen <futhark@chromium.org>
Date: Mon Feb 12 21:31:24 2018

MatchedPropertiesCache items are weak and may be reset.

Add null checks to avoid crashing when the weak reference has been set
to nullptr.

Bug:  810561 
Change-Id: I26fd2274a504e954ee4013e631ec4d5f2b7479d0
Reviewed-on: https://chromium-review.googlesource.com/911031
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Rune Lillesveen <futhark@chromium.org>
Cr-Commit-Position: refs/heads/master@{#536197}
[modify] https://crrev.com/3bb914721da18dc40bf44a39dcec5b30ef486b4b/third_party/WebKit/Source/core/css/resolver/MatchedPropertiesCache.cpp