299dabac5f
All we have to do is ignore it in some generated files, and then it is enforced in all other lib, tool, test files. Change-Id: I5822db725f9c632820323dd20f5d4b6554808c26 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/464624 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>