mozilla/servo — pull request #1932 by brunoabinader (2014-03-17 04:58:44+00:00)
Title: Implement Document.{import,adopt}Node

Specs:
http://dom.spec.whatwg.org/#dom-document-importnode
http://dom.spec.whatwg.org/#dom-document-adoptnode

I'll add content tests as soon as I finish them.