cdddf869f2
TEST=tsan Change-Id: I6dea219ecb26949f01fc51b1c46fd53d3921aba8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/315246 Reviewed-by: Tess Strickland <sstrickl@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>