[webkit-reviews] review requested: [Bug 98144] Fixed position visibility check does not consider descendants : [Attachment 170772] Patch

[bugzilla-daemon at webkit.org]

Xianzhu Wang <wangxianzhu at chromium.org> has asked  for review:
Bug 98144: Fixed position visibility check does not consider descendants
https://bugs.webkit.org/show_bug.cgi?id=98144

Attachment 170772: Patch
https://bugs.webkit.org/attachment.cgi?id=170772&action=review