b63e3f9425
There should be just one source of FeatureSet, so that when we add --default-language-version flag, we apply it to the FeatureSet, and set as the default for the context. R=brianwilkerson@google.com, paulberry@google.com Change-Id: If140768bb51db1b0f736b91ab5d624e22100405e Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/135347 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Konstantin Shcheglov <scheglov@google.com>