Make it possible to run a test in sky_shell

sky/tests/resources/unit.dart

Index: sky/tests/resources/unit.dart
diff --git a/sky/tests/resources/unit.dart b/sky/tests/resources/unit.dart
index f2a1688ed7c29a9660b3e4e4ca9b0059b7a7b85e..ad067fa6414036256afce227dd75f73c60889ecb 100644
--- a/sky/tests/resources/unit.dart
+++ b/sky/tests/resources/unit.dart
@@ -1,6 +1,20 @@
-import "third_party/unittest/unittest.dart";
+
 import "dart:sky.internals" as internals;
 
+import 'package:sky/mojo/shell.dart' as shell;
+import 'package:mojom/sky/test_harness.mojom.dart';
+
+import "third_party/unittest/unittest.dart";
+
+void notifyTestComplete(String result) {
+  TestHarnessProxy test_harness = new TestHarnessProxy.unbound();
+  shell.requestService("mojo:sky_viewer", test_harness);
+  test_harness.ptr.onTestComplete(result, null);
+  test_harness.close();
+
+  internals.notifyTestComplete("DONE");
+}
+
 class _SkyConfig extends SimpleConfiguration {
   void onDone(bool success) {
     try {
@@ -9,7 +23,7 @@ class _SkyConfig extends SimpleConfiguration {
       print(ex.toString());
     }
 
-    internals.notifyTestComplete("DONE");
+    notifyTestComplete("DONE");
   }
 }