8ae984c54a
Use a JavaScript Symbol() for Array rti property. This makes the property non-enumerable, avoiding making the property visible via JS-interop. The code is feature-tested so that IE11 still works with an enumerable String property. Bug: 40535 Change-Id: Ic8b64dac5751989fe4b8d023b0626c3db04676c6 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/137245 Commit-Queue: Stephen Adams <sra@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>