Service Worker: Surface Client.id attribute.

LayoutTests/http/tests/serviceworker/clients-matchall.html

Index: LayoutTests/http/tests/serviceworker/clients-matchall.html
diff --git a/LayoutTests/http/tests/serviceworker/clients-matchall.html b/LayoutTests/http/tests/serviceworker/clients-matchall.html
index bece61bc733439c17ecac1d5d11f467e9e6c901c..b76e6482902d04fa7ad00ca38fcd8a808783d556 100644
--- a/LayoutTests/http/tests/serviceworker/clients-matchall.html
+++ b/LayoutTests/http/tests/serviceworker/clients-matchall.html
@@ -6,6 +6,7 @@
 <script>
 var scope = 'resources/blank.html?clients-matchAll';
 var t = async_test('Test Clients.matchAll()');
+var frame1, frame2;
 t.step(function() {
     service_worker_unregister_and_register(
         t, 'resources/clients-matchall-worker.js', scope)
@@ -13,14 +14,16 @@ t.step(function() {
           return wait_for_state(t, registration.installing, 'activated');
         })
       .then(function() { return with_iframe(scope + '#1'); })
-      .then(function(frame1) {
-          frame1.focus();
+      .then(function(f) {
+          frame1 = f;
+          f.focus();
           return with_iframe(scope + '#2');
         })
-      .then(function(frame2) {
+      .then(function(f) {
+          frame2 = f;
           var channel = new MessageChannel();
           channel.port1.onmessage = t.step_func(onMessage);
-          frame2.contentWindow.navigator.serviceWorker.controller.postMessage(
+          f.contentWindow.navigator.serviceWorker.controller.postMessage(
               {port:channel.port2}, [channel.port2]);
         })
       .catch(unreached_rejection(t));
@@ -36,6 +39,8 @@ function onMessage(e) {
   assert_equals(e.data.length, 2);
   assert_array_equals(e.data[0], expected[0]);
   assert_array_equals(e.data[1], expected[1]);
+  frame1.remove();
+  frame2.remove();
   service_worker_unregister_and_done(t, scope);
 }
 </script>