Stop treating final as const in dart2js.

tests/language/final_is_not_const_test.dart

Index: tests/language/final_is_not_const_test.dart
diff --git a/tests/compiler/dart2js_extra/generics_is_check1_test.dart b/tests/language/final_is_not_const_test.dart
similarity index 64%
copy from tests/compiler/dart2js_extra/generics_is_check1_test.dart
copy to tests/language/final_is_not_const_test.dart
index c616c7c482f1ed35cb00fa3fb8994c4d74a8e441..597ff7a1b03000a44ab7f20364da74c37a7dda7f 100644
--- a/tests/compiler/dart2js_extra/generics_is_check1_test.dart
+++ b/tests/language/final_is_not_const_test.dart
@@ -2,10 +2,10 @@
 // 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 Hest<X> {}
+final F0 = 42;
+const C0 = F0;  /// 01: compile-time error
 
 main() {
-  var x = new Hest<int>();
-  Expect.isTrue(x is Hest<int>);
-  Expect.isFalse(x is Hest<String>);
+  Expect.equals(42, F0);
+  Expect.equals(42, C0);  /// 01: continued
 }