Dart2js allows to declare JS-interp members, even if the enclosing library
doesn't have a JS annotation. This relaxes DDC to do the same.
Change-Id: I733d1cbb308692d89b8cd443cbde0ed30637e48e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/177780
Reviewed-by: Srujan Gaddam <srujzs@google.com>
Commit-Queue: Sigmund Cherem <sigmund@google.com>
Sigmund Cherem