2d01bf3779
STW marking is no longer O(new-space), so there's no longer a reason to delay finalizing marking hoping for a scavenge to make new-space mostly empty. TEST=ci Change-Id: Ie782e88852714d30e0c75aa9aecac62e56c434ce Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/319880 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>