[webkit-reviews] review requested: [Bug 78455] Use youngestShadowRoot and oldestShadowRoot instead of Element::shadowRoot() : [Attachment 126896] Test

[bugzilla-daemon at webkit.org]

Shinya Kawanaka <shinyak at chromium.org> has asked  for review:
Bug 78455: Use youngestShadowRoot and oldestShadowRoot instead of
Element::shadowRoot()
https://bugs.webkit.org/show_bug.cgi?id=78455

Attachment 126896: Test
https://bugs.webkit.org/attachment.cgi?id=126896&action=review