[ddc] Merge modular/issue37523 test into modular/nested_constants test

Change-Id: I5d60de4468f8608fe275fccd2e4f833a8bcfb89d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112340
Reviewed-by: Nicholas Shahan <nshahan@google.com>
Commit-Queue: Johnni Winther <johnniwinther@google.com>

tests/modular/issue37523/def.dart

@@ -1,15 +0,0 @@
-// Copyright (c) 2019, 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.
-
-class B {
-  const B();
-}
-
-class A {
-  final B b;
-  const A(this.b);
-}
-
-const ab = A(B());
-const b = B();

tests/modular/issue37523/main.dart

@@ -1,15 +0,0 @@
-// Copyright (c) 2019, 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';
-
-import 'def.dart';
-
-main() {
-  const v1 = A(B());
-  const v2 = ab;
-  const v3 = A(b);
-  Expect.equals(v1, v2);
-  Expect.equals(v2, v3);
-}

tests/modular/issue37523/modules.yaml

@@ -1,8 +0,0 @@
-# Copyright (c) 2019, 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.
-
-dependencies:
-  main: [def, expect]
-flags:
-  - constant-update-2018

tests/modular/nested_constants/main.dart

@@ -12,4 +12,10 @@ const c3 = A(b);
 main() {
   Expect.equals(c1, c2);
   Expect.equals(c2, c3);
+
+  const v1 = A(B());
+  const v2 = ab;
+  const v3 = A(b);
+  Expect.equals(v1, v2);
+  Expect.equals(v2, v3);
 }