Fix deferred loading with multiple apps on same page.

tests/html/deferred_multi_app_lib.dart

Index: tests/html/deferred_multi_app_lib.dart
diff --git a/tools/canary.dart b/tests/html/deferred_multi_app_lib.dart
similarity index 71%
copy from tools/canary.dart
copy to tests/html/deferred_multi_app_lib.dart
index cca1f90cd7be8eb2481a00a89bbc7ba7edaa6d4f..6ec352d4a43cf336d85abaf9ebc816150ef0d007 100644
--- a/tools/canary.dart
+++ b/tests/html/deferred_multi_app_lib.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.
 
-// Script which exits with code 42.
-
-import 'dart:io';
-
-void main() {
-  exitCode = 42;
+one() {
+  return "one";
 }
+
+two() {
+  return "two";
+}