21cbb2ae3a
When several isolates share same isolate group, they share the same heap. This change iterates over isolate groups and aggregates their heap size instead of iterating over isolates. Change-Id: I83b04110277b3a2d22ab758b50ee8c4ce480ea7f Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212382 Commit-Queue: Alexander Aprelev <aam@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>