Node::showTreeForThisAcrossFrame doesn't show child elements of a shadow host. That should be fixed.
Created attachment 97410 [details] Patch
Created attachment 97411 [details] Patch
Comment on attachment 97411 [details] Patch Recursion!
Comment on attachment 97411 [details] Patch Clearing flags on attachment: 97411 Committed r89021: <http://trac.webkit.org/changeset/89021>
All reviewed patches have been landed. Closing bug.