isolates refactor: this change introduces 'dart:isolate' as a library. This is a

tests/language/src/TypedMessageTest.dart

Index: tests/language/src/TypedMessageTest.dart
diff --git a/tests/language/src/TypedMessageTest.dart b/tests/language/src/TypedMessageTest.dart
index ecbf02356a940262f92f6f497f3993e6be651918..6f52a412f6adf317979efa7189eecf58a92c23b4 100644
--- a/tests/language/src/TypedMessageTest.dart
+++ b/tests/language/src/TypedMessageTest.dart
@@ -5,6 +5,9 @@
 // typed objects.
 // VMOptions=--enable_type_checks --enable_asserts
 
+#library("TypedMessageTest");
+#import("dart:isolate");
+
 class TypedMessageTest {
   static void testMain() {
     LogClient.test();