import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

testing/web-platform/tests/service-workers/stub-4.7.1.1-wait-until-method.html

@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html>
+<title>Service Workers: event.waitUntil(f)</title>
+    <head>
+        <link rel="help" href="https://w3c.github.io/ServiceWorker/#wait-until-method">
+        <script src="/resources/testharness.js"></script>
+        <script src="/resources/testharnessreport.js"></script>
+
+    </head>
+    <body>
+
+<!--
+
+`event.waitUntil(f)` method, when called in `oninstall` or `onactivate`,
+extends the lifetime of the event. When called in `oninstall`, it delays
+treating the installing worker until the passed [Promise][1] resolves
+successfully. This is primarily used to ensure that a `ServiceWorker` is not
+active until all of the core caches it depends on are populated. When called in
+`onactivate`, it delays treating the activating worker until the passed
+[Promise][1] resolves successfully. This is primarily used to ensure that any
+[Functional events][2] are not dispatched to the `ServiceWorker` until it
+upgrades database schemas and deletes the outdated cache entries.
+
+[1]: http://goo.gl/3TobQS
+[2]: #functional-events
+
+-->
+
+
+
+    <script>
+        test(function() {
+            // not_implemented();
+        }, "There are no tests for section event.waitUntil(f) so far.");
+    </script>
+
+    </body>
+</html>
+