Manually import wpt@359815a0ff565cb6ca89349f6e9e154789267d8b

third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.https.html

Index: third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.https.html
diff --git a/third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.html b/third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.https.html
similarity index 82%
rename from third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.html
rename to third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.https.html
index 47b536d2198ab0773c1d380f54ccf95194f0860e..8a8a8f67f22fe81479331680944b9dca71f4643b 100644
--- a/third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.html
+++ b/third_party/WebKit/LayoutTests/imported/wpt/html/webappapis/scripting/events/messageevent-constructor.https.html
@@ -2,6 +2,7 @@
 <title>MessageEvent constructor</title>
 <script src="/resources/testharness.js"></script>
 <script src="/resources/testharnessreport.js"></script>
+<script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script>
 <script>
 test(function() {
   var ev = new MessageEvent("test")
@@ -75,4 +76,21 @@ test(function() {
   }, "Calling initMessageEvent with only 7 parameters should throw a TypeError")
 }, "All parameters to initMessageEvent should be mandatory")
 
+promise_test(function(t) {
+    var worker_url = "/service-workers/service-worker/resources/empty-worker.js";
+    var scope = "/service-workers/service-worker/resources/";
+    var registration;
+
+    return service_worker_unregister_and_register(t, worker_url, scope)
+      .then(function(r) {
+          registration = r;
+          return wait_for_state(t, r.installing, "activated");
+        })
+      .then(function() {
+          var ev = new MessageEvent("test", { source: registration.active });
+          assert_equals(ev.source, registration.active, "source attribute should return the ServiceWorker");
+          service_worker_unregister(t, scope);
+        });
+  }, "Passing ServiceWorker for source member");
+
 </script>