DOM4 defines a number of new mutation methods that we've held off on implementing due to compatibility concerns. I think we should commit these in the tree behind a flag and ship these in Chrome. If we hit compat issues, we might need to change the spec, otherwise we remove the flag. http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#mutation-methods
Whoops, already had a bug for this. *** This bug has been marked as a duplicate of bug 74648 ***