Add corelib tests

test/codegen/corelib/list_literal_is_growable_test.dart

Index: test/codegen/corelib/list_literal_is_growable_test.dart
diff --git a/test/codegen/language/factory_arrow_test.dart b/test/codegen/corelib/list_literal_is_growable_test.dart
similarity index 75%
copy from test/codegen/language/factory_arrow_test.dart
copy to test/codegen/corelib/list_literal_is_growable_test.dart
index d2cf52806c9c702a598e64d0d8a83cb7887816a8..061a72d1c0cf17ae1ebb60b12907e7a918e616aa 100644
--- a/test/codegen/language/factory_arrow_test.dart
+++ b/test/codegen/corelib/list_literal_is_growable_test.dart
@@ -4,11 +4,9 @@
 
 import "package:expect/expect.dart";
 
-class A {
-  A.foo() {}
-  factory A() => new A.foo();
-}
-
 main() {
-  Expect.isTrue(new A() is A);
+  var l = [];
+  l.add(1);
+  Expect.equals(1, l.length);
+  Expect.equals(1, l[0]);
 }