Add NotificationEvent.action property in SW events

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 ad8f02c5f3871e58fabc955178b7a51ec872a645..8b2156d1dda05d29f87d9e96d2b59a617bd059b5 100644
--- a/LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html
+++ b/LayoutTests/http/tests/notifications/serviceworker-notificationclick-event-reflection.html
@@ -69,11 +69,10 @@
                   assert_equals(event.data.command, 'click', 'The notification was expected to be clicked.');
 
                   Object.keys(options).forEach(function(key) {
-                      if (key == 'actions') {
-                          // TODO(johnme): actions are not yet serialized properly.
-                          return;
-                      }
-                      assert_object_equals(event.data.notification[key], options[key], 'The ' + key + ' field must be the same.');
+                      if (key == "actions")

[Peter Beverloo, 2015/08/04 21:01:23]

Single quotes. (Consistency with the file.)

[johnme, 2015/08/05 11:56:22]

Done.

+                          assert_object_equals(event.data.notification.actions, options.actions.slice(0, Notification.maxActions));
+                      else
+                          assert_object_equals(event.data.notification[key], options[key], 'The ' + key + ' field must be the same.');
                   });
 
                   test.done();