917ae52f70
TEST=unit tests Bug: https://github.com/dart-lang/sdk/issues/47838 Change-Id: I8a64e8623022215cae261eadb25b22deb9f3d910 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/231330 Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Brian Quinlan <bquinlan@google.com>