Update semantic_visitor_send_data to reflect the current state.

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 2684 matching lines @@
           set a(_) {}
         }
 
         class C extends B {
           m() => super.a += 42;
         }
         ''',
         const Visit(VisitKind.VISIT_SUPER_FIELD_SETTER_COMPOUND,
             getter: 'field(A#a)', setter: 'setter(B#a)',
             operator: '+=', rhs: '42')),
-    // TODO(johnniwinther): Enable this when dart2js supports shadow setters.
-    /*const Test.clazz(
+    const Test.clazz(
         '''
         class A {
           var a;
         }
         class B extends A {
           final a = 0;
         }
 
         class C extends B {
           m() => super.a += 42;
         }
         ''',
-        const Visit(VisitKind.VISIT_SUPER_FIELD_FIELD_COMPOUND,
-            getter: 'field(B#a)', setter: 'field(A#a)',
-            operator: '+=', rhs: '42')),*/
+        // TODO(johnniwinther): Change this to
+        // [VISIT_SUPER_FIELD_FIELD_COMPOUND] when dart2js supports shadow
+        // setters.
+        const Visit(VisitKind.VISIT_SUPER_FINAL_FIELD_COMPOUND,
+            element: 'field(B#a)',
+            operator: '+=', rhs: '42')),
     const Test.clazz(
         '''
         class B {
           a() {}
         }
         class C extends B {
           m() => super.a += 42;
         }
         ''',
         const Visit(VisitKind.VISIT_SUPER_METHOD_COMPOUND,
@@ skipping 1698 matching lines @@
           set a(_) {}
         }
 
         class C extends B {
           m() => super.a ??= 42;
         }
         ''',
         const Visit(VisitKind.VISIT_SUPER_FIELD_SETTER_SET_IF_NULL,
             getter: 'field(A#a)', setter: 'setter(B#a)',
             rhs: '42')),
-    // TODO(johnniwinther): Enable this when dart2js supports shadow setters.
-    /*const Test.clazz(
+    const Test.clazz(
         '''
         class A {
           var a;
         }
         class B extends A {
           final a = 0;
         }
 
         class C extends B {
           m() => super.a ??= 42;
         }
         ''',
-        const Visit(VisitKind.VISIT_SUPER_FIELD_FIELD_SET_IF_NULL,
-            getter: 'field(B#a)', setter: 'field(A#a)',
-            rhs: '42')),*/
+        // TODO(johnniwinther): Change this to
+        // [VISIT_SUPER_FIELD_FIELD_SET_IF_NULL] when dart2js supports shadow
+        // setters.
+        const Visit(VisitKind.VISIT_SUPER_FINAL_FIELD_SET_IF_NULL,
+            element: 'field(B#a)',
+            rhs: '42')),
     const Test.clazz(
         '''
         class B {
           a() {}
         }
         class C extends B {
           m() => super.a ??= 42;
         }
         ''',
         const Visit(VisitKind.VISIT_SUPER_METHOD_SET_IF_NULL,
@@ skipping 105 matching lines @@
             element: 'field(a)', rhs: '42')),
 
     const Test(
         '''
         m() => unresolved ??= 42;
         ''',
         const Visit(VisitKind.VISIT_UNRESOLVED_SET_IF_NULL,
             name: 'unresolved', rhs: '42')),
   ],
 };