89886de2e8
Run the seal_native_object.js preamble before any other code when trying to benchmark dart2js compiled code. Change-Id: Iec95dd3189869738185bce34f5202be4db0b90f8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/330669 Commit-Queue: Nicholas Shahan <nshahan@google.com> Reviewed-by: Jonas Termansen <sortie@google.com>