0578c66a98
+ restrict replaceWith and replaceChild to only support replacement and not removal. TEST=existing Change-Id: I5381b4907725dd0ea7cf544e133bdb296df48ee0 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/184469 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Jens Johansen <jensj@google.com>