359e597cec
PackageMapUriResolver is still based on Map. Change-Id: I7d68f9dbc7d970b22c8e1a01d8e816b3e5723f34 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/244047 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>