992d060da6
Minor changes for strong-mode. Bug: Change-Id: Ia9387a4d7976156bb592515bb848f7be45699478 Reviewed-on: https://dart-review.googlesource.com/11021 Commit-Queue: Ben Konyi <bkonyi@google.com> Reviewed-by: Phil Quitslund <pquitslund@google.com> Reviewed-by: Bob Nystrom <rnystrom@google.com>