6851c0eca3
Fix visiting roots to wait for visiting new-space pages to finish, not merely start. Change-Id: I0c6688701f4563bf5c3b8ae02f215e709d5cac6f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148230 Reviewed-by: Martin Kustermann <kustermann@google.com> Reviewed-by: Alexander Aprelev <aam@google.com> Commit-Queue: Ryan Macnak <rmacnak@google.com>