This CL makes experimental invalidation work on DillLibraryBuilders,
and solves all found issues (e.g. old references (aka leaks)) with it.
Note: This CL introduces a few writes that seems weird (e.g. setting
variables that's about to be out-of-scope to null). This is done to
prevent "leaks", or probably more likely, prevent a "false positive"
leak detection and it currently gives a "clean bill of health" from
the leak detector.
Change-Id: I5b01df6e9ede710a5b624a8a4c21015214140318
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/134288
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Jens Johansen
ddd6e31dee