Ensure correct current element for field initializers.

tests/language/final_initializer_instance_reference_test.dart

 // Copyright (c) 2016, 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.
 
-import "package:expect/expect.dart";
+// Dart2js regression test. Error in initializer might be report with the wrong
+// current element.
 
-class C<D> {
-  void set D(int value) {
-    field = value;
-  }
+class C {
+  const C();
 
-  int field;
+  final x = 1;
+  final y = x; /// 01: compile-time error
 }
 
 main() {
-  C<int> c = new C<int>();
-  c.D = 1;
-  Expect.equals(c.field, 1);
+  const C().y; /// 01: continued
 }