8db8ebc2f3
This fixes the issue of nullability wrappers showing up around the settee of 'setBaseClass'. Change-Id: I73207fafe33a039567052ae2c5c8c1a84d7505df Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/136724 Reviewed-by: Nicholas Shahan <nshahan@google.com> Commit-Queue: Mark Zhou <markzipan@google.com>