3eb9614c36
Work towards https://github.com/dart-lang/sdk/issues/61079 This change offers up a convenient API for adding packages (often mock packages) to the resource provider used in tests. Change-Id: I0f29e2fa5ece0b6260173949c9e8418fce63fc91 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/453844 Commit-Queue: Samuel Rawlins <srawlins@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>