Use sky_shell instead of mojo_shell for testing.

sky/tests/resources/harness.dart

Index: sky/tests/resources/harness.dart
diff --git a/sky/tests/resources/harness.dart b/sky/tests/resources/harness.dart
new file mode 100644
index 0000000000000000000000000000000000000000..7ea476d9bb8e3b4044315ce08cf8ff4bf700d505
--- /dev/null
+++ b/sky/tests/resources/harness.dart
@@ -0,0 +1,14 @@
+import "dart:sky.internals" as internals;
+
+import 'package:sky/mojo/shell.dart' as shell;
+import 'package:mojom/sky/test_harness.mojom.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();
+
+  // FIXME(eseidel): Remove this once all tests run in sky_shell.
+  internals.notifyTestComplete(result);
+}