Brian noticed this running unit tests. Who knows how many bug reports we
have missed from this -- we can only hope it is very few.
```
type '_TypeError' is not a subtype of type 'String'
package:analysis_server/src/server/error_notifier.dart 26:7 ErrorNotifier.logException
package:analysis_server/src/analysis_server.dart 266:54 AnalysisServer.handleRequest.<fn>
dart:async/zone.dart 1222:13 _rootRunBinary
dart:async/zone.dart 1107:19 _CustomZone.runBinary
dart:async/zone.dart 1601:18 runZonedGuarded.<fn>
dart:async/zone.dart 751:19 _ZoneDelegate.handleUncaughtError
...
```
Change-Id: Ib83dc99a88a1566ead5d59a9f71afc80416eb341
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151464
Auto-Submit: Mike Fairhurst <mfairhurst@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Mike Fairhurst
aa3f7dc4e9