Avoid generating members for classes only for needed rti.

tests/language/regress_14105_test.dart

Index: tests/language/regress_14105_test.dart
diff --git a/tests/language/regress_14105_test.dart b/tests/language/regress_14105_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..3da46b9d0fc5e27d01709bbc4c27567065e4995e
--- /dev/null
+++ b/tests/language/regress_14105_test.dart
@@ -0,0 +1,25 @@
+// Copyright (c) 2013, 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.
+
+// Regression test for Issue 14105.
+
+typedef UsedAsFieldType();
+
+class ClassOnlyForRti {
+  UsedAsFieldType field;
+}
+
+class A<T> {
+  var field;
+}
+
+use(a) => a.field = "";
+
+var useFieldSetter = use;
+
+main() {
+  var a = new A<ClassOnlyForRti>();
+  useFieldSetter(a);
+  print(a is A<int>);
+}