Allows embedders to programmatically request heap snapshot from a
running isolate group instead of relying on a vm-service or hidden
internal Dart APIs
Additionally we allow to include snapshot writing functionality into
PRODUCT builds using DART_ENABLE_HEAP_SNAPSHOT_WRITER define.
TEST=vm/cc/DartAPI_WriteHeapSnapshot
Bug: b/259115846
Change-Id: Ic3ef76e5fb9adcf8f23a1959f5238742b64ecde2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/273181
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Vyacheslav Egorov
c704e11ee2