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/+/efd690f517a0758bd37bb701c3ab84656922fd39 ([css-typed-om] Implement declared style property map.).

If this is incorrect, please remove the owner and apply the Test-Predator-Wrong-CLs label.

This is a serious security regression. If you are not able to fix this quickly, please revert the change that introduced it.

If this doesn't affect a release branch, or has not been properly classified for severity, please update the Security_Impact or Security_Severity labels, and remove the ReleaseBlock label. To disable this altogether, apply ReleaseBlock-NA.

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The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/64bd68a928aebf4399f03eaf53ee15785e78fe54

commit 64bd68a928aebf4399f03eaf53ee15785e78fe54
Author: Darren Shen <shend@chromium.org>
Date: Fri Jan 05 04:34:34 2018

[css-typed-om] Fix crash by always considering css wide keywords.

Currently, when we convert a CSSValue to a CSSStyleValue, we would
first look at what property we are doing it for (e.g. object-position)
and then converting the CSSValue to the appropriate CSSStyleValue
(for object-position, it's CSSPositionValue). However, every css
property can take 3 "css wide" or "global" keywords: inherit, initial
and unset. These become CSSIdentifierValues.

Thus, when we do something like "object-position: inherit", it would
try to convert a CSSIdentifierValue to a CSSPositionValue, which is
an error.

We can fix this by always considering css wide keywords first and
converting them to CSSKeywordValues.

Bug:  799017 ,  798956 
Change-Id: Id7f9d89bf42d3fce85fef748fd40a06a0a05566b
Reviewed-on: https://chromium-review.googlesource.com/851232
Commit-Queue: Darren Shen <shend@chromium.org>
Reviewed-by: nainar <nainar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#527212}
[modify] https://crrev.com/64bd68a928aebf4399f03eaf53ee15785e78fe54/third_party/WebKit/LayoutTests/typedcssom/inlinestyle/properties/config-templates.js
[add] https://crrev.com/64bd68a928aebf4399f03eaf53ee15785e78fe54/third_party/WebKit/LayoutTests/typedcssom/inlinestyle/properties/object-position.html
[modify] https://crrev.com/64bd68a928aebf4399f03eaf53ee15785e78fe54/third_party/WebKit/Source/core/css/cssom/StyleValueFactory.cpp

ClusterFuzz has detected this issue as fixed in range 527199:527221.

Detailed report: https://clusterfuzz.com/testcase?key=5599281049501696

Fuzzer: inferno_twister
Job Type: linux_asan_content_shell_drt
Platform Id: linux

Crash Type: Security DCHECK failure
Crash Address: 
Crash State:
  value.IsValuePair() in CSSValuePair.h
  blink::CSSPositionValue::FromCSSValue
  blink::CreateStyleValueWithProperty
  
Sanitizer: address (ASAN)

Regressed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=526884:526887
Fixed: https://clusterfuzz.com/revisions?job=linux_asan_content_shell_drt&range=527199:527221

Reproducer Testcase: https://clusterfuzz.com/download?testcase_id=5599281049501696

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 5599281049501696 is verified as fixed, so closing issue as verified.

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

This bug has been closed for more than 14 weeks. Removing security view restrictions.

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