Fix super noSuchMethod handling.

tests/compiler/dart2js/semantic_visitor_test_send_data.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart2js.semantics_visitor_test;
 
 const Map<String, List<Test>> SEND_TESTS = const {
   'Parameters': const [
     // Parameters
     const Test('m(o) => o;',
@@ skipping 1290 matching lines @@
                 arguments: '(null,42)')),
     const Test.clazz(
             '''
         class B {
         }
         class C extends B {
           m() => super.o;
         }
         ''',
         const Visit(VisitKind.VISIT_UNRESOLVED_SUPER_GET)),
+    const Test.clazz(
+            '''
+    class B {
+    }
+    class C extends B {
+      m() => super.o = 42;
+    }
+    ''',
+        const Visit(VisitKind.VISIT_UNRESOLVED_SUPER_SET,
+                    rhs: '42')),
   ],
   'Super properties': const [
     // Super properties
     const Test.clazz(
         '''
         class B {
           get o => null;
         }
         class C extends B {
           m() => super.o;
@@ skipping 3181 matching lines @@
             element: 'field(a)', rhs: '42')),
 
     const Test(
         '''
         m() => unresolved ??= 42;
         ''',
         const Visit(VisitKind.VISIT_UNRESOLVED_SET_IF_NULL,
             name: 'unresolved', rhs: '42')),
   ],
 };