The legacy Dart 2.9 benchmarks that used the default List(int size)
constructor are changed to use the equivalent List.filled(size, null)
constructor, because the default List constructor is removed.
Bug: b/280275041
Change-Id: I2813537ae22e19d473abde70d677368940585423
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/304700
Reviewed-by: Jonas Termansen <sortie@google.com>
Commit-Queue: William Hesse <whesse@google.com>