kernel backend impact - noSuchMethod helpers are passed a Map literal

pkg/compiler/lib/src/js_backend/backend_impact.dart

Index: pkg/compiler/lib/src/js_backend/backend_impact.dart
diff --git a/pkg/compiler/lib/src/js_backend/backend_impact.dart b/pkg/compiler/lib/src/js_backend/backend_impact.dart
index f92da95e76a74983db250de8ec3c1b8fa17ce3b5..32a2d37ad98b8ae851e90d2cf8e859bd90a51607 100644
--- a/pkg/compiler/lib/src/js_backend/backend_impact.dart
+++ b/pkg/compiler/lib/src/js_backend/backend_impact.dart
@@ -224,7 +224,9 @@ class BackendImpacts {
           // Also register the types of the arguments passed to this method.
           _needsList(
               'Needed to encode the arguments for throw NoSuchMethodError.'),
-          _needsString('Needed to encode the name for throw NoSuchMethodError.')
+          _needsString(
+              'Needed to encode the name for throw NoSuchMethodError.'),
+          mapLiteralClass, // noSuchMethod helpers are passed a Map.
         ]);
   }