dart2js: Fast fix for deferred globals.

tests/language/deferred_global_test.dart

+// Copyright (c) 2014, 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 'package:async_helper/async_helper.dart';
+
+import "deferred_global_lib.dart" deferred as lib;
+
+void main() {
+  asyncStart();
+  lib.loadLibrary().then((_) {
+    Expect.equals("finalConstGlobal", lib.finalConstGlobal);
+    Expect.equals(0, lib.sideEffectCounter);
+    Expect.equals("finalNonConstGlobal", lib.finalNonConstGlobal);
+    Expect.equals(1, lib.sideEffectCounter);
+    Expect.equals("finalConstGlobal", lib.finalConstGlobal);
+    Expect.equals("finalNonConstGlobal", lib.finalNonConstGlobal);
+    Expect.equals("lazyConstGlobal", lib.lazyConstGlobal);
+    Expect.equals(1, lib.sideEffectCounter);
+    Expect.equals("lazyNonConstGlobal", lib.lazyNonConstGlobal);
+    Expect.equals(2, lib.sideEffectCounter);
+    Expect.equals("finalConstGlobal", lib.readFinalConstGlobal());
+    Expect.equals("finalNonConstGlobal", lib.readFinalNonConstGlobal());
+    Expect.equals("lazyConstGlobal", lib.readLazyConstGlobal());
+    Expect.equals("lazyNonConstGlobal", lib.readLazyNonConstGlobal());
+
+    lib.lazyConstGlobal = "lazyConstGlobal_mutated";
+    lib.lazyNonConstGlobal = "lazyNonConstGlobal_mutated";
+    Expect.equals("lazyConstGlobal_mutated", lib.lazyConstGlobal);
+    Expect.equals("lazyNonConstGlobal_mutated", lib.lazyNonConstGlobal);
+    Expect.equals("lazyConstGlobal_mutated", lib.readLazyConstGlobal());
+    Expect.equals("lazyNonConstGlobal_mutated", lib.readLazyNonConstGlobal());
+    Expect.equals(2, lib.sideEffectCounter);
+
+    lib.writeLazyConstGlobal("lazyConstGlobal_mutated2");
+    lib.writeLazyNonConstGlobal("lazyNonConstGlobal_mutated2");
+    Expect.equals("lazyConstGlobal_mutated2", lib.lazyConstGlobal);
+    Expect.equals("lazyNonConstGlobal_mutated2", lib.lazyNonConstGlobal);
+    Expect.equals("lazyConstGlobal_mutated2", lib.readLazyConstGlobal());
+    Expect.equals("lazyNonConstGlobal_mutated2", lib.readLazyNonConstGlobal());
+
+    Expect.equals(2, lib.sideEffectCounter);
+    asyncEnd();
+  });
+}