fa1a28bf65
I plan to start migrating the associated tests next, but wanted to unblock other work sooner (and minimize the size of the CL). Change-Id: I83340208b116acca6f9a4c59d7dfceb625a39eb2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195780 Commit-Queue: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Konstantin Shcheglov <scheglov@google.com>