59931e3340
Rely on vm_isolate()->heap()->Contains() instead of header bit check. Change-Id: Ibf66b9910aea5003dd3dee539704deeb72c61ada Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/97340 Commit-Queue: Alexander Aprelev <aam@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com>