43333c319d
This reverts commit 6c710d27c2 as it
introduces a deadlock with use of readlock in ContainsOnlyOneIsolate
that runs under RunWithStoppedMutators.
https://dart-review.googlesource.com/c/sdk/+/193582 should be better fix
for the original problem.
TEST=ci
Change-Id: Ib7a0c5af5e55bbdeaa3d868f75482cb426a416fe
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/193640
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>