1a6755cbf4
Effectively these methods always succeed, so return value checking just can be source of confusion. TEST=ci Change-Id: I0a93f130b03c0f66be733c939a1d795d704291d1 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/423963 Commit-Queue: Alexander Aprelev <aam@google.com> Reviewed-by: Slava Egorov <vegorov@google.com>