Add layouttest for notification properties of persistent notification

LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html

Index: LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html
diff --git a/LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html b/LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html
index 577c4c5eacffbc6a52e53e91c626e9b24c06eb87..5bf4edf0021dd04b5f0c9be24ecb87ab4db69e2d 100644
--- a/LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html
+++ b/LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html
@@ -26,7 +26,8 @@
               // FIXME: Relative URLs for the icon attribute currently get reflected as
               // an absolute URL, which should probably be the given relative URL.
               icon: 'https://example/icon.png',
-              silent: true,
+              vibrate: [100, 200, 300],
+              silent: false,
               data: [
                   { property: 'foobar',
                     string: '\uDFFF\u0000\uDBFF',
@@ -65,14 +66,9 @@
                   assert_equals(event.data.command, 'click', 'The notification was expected to be clicked.');
 
                   Object.keys(options).forEach(function(key) {
-                      if (key == 'data')
-                          return;  // Check "data" separately to avoid stringifying it.
-
-                      assert_equals(event.data.notification[key], options[key], 'The ' + key + ' field must be the same.');
+                      assert_object_equals(event.data.notification[key], options[key], 'The ' + key + ' field must be the same.');
                   });
 
-                  assert_object_equals(event.data.notification.data, options.data, 'The data field must be the same.');
-
                   test.done();
               });
           }).catch(unreached_rejection(test));