8a965f86c1
Mostly adding types Change-Id: I2f161654a8fee33380075a64ebe7968ac1e741e6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/501704 Commit-Queue: Kevin Moore <kevmoo@google.com> Reviewed-by: Nate Biggs <natebiggs@google.com>