[webkit-reviews] review requested: [Bug 31680] WebCore::Document::updateLayoutIgnorePendingStylesheets NULL pointer : [Attachment 52021] v3; used asssertion, added null checks more; enhanced test

[bugzilla-daemon at webkit.org]

MORITA Hajime <morrita at google.com> has asked  for review:
Bug 31680: WebCore::Document::updateLayoutIgnorePendingStylesheets NULL pointer
https://bugs.webkit.org/show_bug.cgi?id=31680

Attachment 52021: v3; used asssertion, added null checks more; enhanced test
https://bugs.webkit.org/attachment.cgi?id=52021&action=review