[webkit-reviews] review requested: [Bug 103231] Use AtomicString instead of AtomicStringImpl* in WebCore::RuleSet. : [Attachment 175956] Add isNull() check.

[bugzilla-daemon at webkit.org]

Hayato Ito <hayato at chromium.org> has asked  for review:
Bug 103231: Use AtomicString instead of AtomicStringImpl* in WebCore::RuleSet.
https://bugs.webkit.org/show_bug.cgi?id=103231

Attachment 175956: Add isNull() check.
https://bugs.webkit.org/attachment.cgi?id=175956&action=review