Merge the Sky Engine changes from the SkyDart branch

sky/tests/resources/dump-as-text.sky

Index: sky/tests/resources/dump-as-text.sky
diff --git a/sky/tests/resources/dump-as-text.sky b/sky/tests/resources/dump-as-text.sky
index 5b35f9b6ce12ef13ddc06ab4d7dd3d4f54b6e52f..4effcb5aca1ee8df767eddcd0a310d8284eb999a 100644
--- a/sky/tests/resources/dump-as-text.sky
+++ b/sky/tests/resources/dump-as-text.sky
@@ -1,5 +1,12 @@
 <script>
-window.addEventListener('load', function() {
+import "dart:sky" as sky;
+import "dart:sky.internals" as internals;
+
+void handleLoadEvent(event) {
   internals.notifyTestComplete(internals.contentAsText());
-});
+}
+
+void init() {
+  sky.window.addEventListener('load', handleLoadEvent);
+}
 </script>