import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

testing/web-platform/tests/service-workers/stub-4.1.2-service-worker-global-scope-clients.html

@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html>
+<title>Service Workers: clients</title>
+    <head>
+        <link rel="help" href="https://w3c.github.io/ServiceWorker/#service-worker-global-scope-clients">
+        <script src="/resources/testharness.js"></script>
+        <script src="/resources/testharnessreport.js"></script>
+
+    </head>
+    <body>
+
+<!--
+
+`self.clients` must return the `[ServiceWorkerClients][1]` object containing a
+list of client objects, identifiable by ID, that correspond to windows or
+workers that are [controlled][2] by this Service Worker.
+
+[1]: #service-worker-clients-interface
+[2]: #document-control
+
+-->
+
+
+
+    <script>
+        test(function() {
+            // not_implemented();
+        }, "There are no tests for section clients so far.");
+    </script>
+
+    </body>
+</html>
+