Bug: https://github.com/dart-lang/sdk/issues/33022
This commit adds an error when a final field is not initialized at all
(and there is at least one generative constructor). A later commit
will add an error for the case where a field is initialized by some,
but not all, generative constructors.
A number of classes in the Dart2js and DDC support libraries use
uninitialized final fields to indicate getters in the corresponding
native classes. This commit adds a temporary whitelist for the
affected files, which can be removed when the fields have been
replaced by external getters.
This is tracked by https://github.com/dart-lang/sdk/issues/33762
Change-Id: I6b5cee230c7cd5554da2b61da7ebddb6b0b9396e
Reviewed-on: https://dart-review.googlesource.com/63781
Reviewed-by: Daniel Hillerström <hillerstrom@google.com>