Alexander Markov
8c1fa6d05b
ExtensionTypeMemberDescriptor.memberReference and ExtensionMemberDescriptor.memberReference are now nullable. TFA-based tree shaker can now set them to null when extension type member is not used and removed but corresponding lowered tear-off is still used and retained. Front-end never sets them to null and requires non-null memberReferences when consuming kernel. TEST=pkg/vm/testcases/transformations/type_flow/transformer/regress_flutter155624.dart Fixes https://github.com/flutter/flutter/issues/155624 Change-Id: I71f98c02f4659ff72a8c1d7fc6c578e8b8e26d82 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/401382 Reviewed-by: Johnni Winther <johnniwinther@google.com> Reviewed-by: Slava Egorov <vegorov@google.com> Reviewed-by: Srujan Gaddam <srujzs@google.com> Reviewed-by: Ömer Ağacan <omersa@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>