0a60ff13e2
This requires introducing the notion of a code alias, into the code generator. These 10 HintCodes are referenced directly by the linter, and so must be migrated to WarningCodes incrementally. Bug: https://github.com/dart-lang/sdk/issues/50796 Change-Id: I9223986cb198cb87cec74646ef20c3020c019fdd Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/279472 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>