ServiceWorker: Enable ServiceWorkerRegistration and update layout tests

LayoutTests/http/tests/serviceworker/multiple-register.html

Index: LayoutTests/http/tests/serviceworker/multiple-register.html
diff --git a/LayoutTests/http/tests/serviceworker/multiple-register.html b/LayoutTests/http/tests/serviceworker/multiple-register.html
index 34793a521b1b56bc0735c37e26915f7b361cf00a..c42afbd0af1a6cdc67fcf865f39608c3e26262c7 100644
--- a/LayoutTests/http/tests/serviceworker/multiple-register.html
+++ b/LayoutTests/http/tests/serviceworker/multiple-register.html
@@ -8,8 +8,13 @@ var worker_url = 'resources/empty-worker.js';
 async_test(function(t) {
   var scope = 'scope/subsequent-register';
   var worker;
+  var previous_registration;
 
   service_worker_unregister_and_register(t, worker_url, scope)
+    .then(function(registration) {
+      previous_registration = registration;
+        return wait_for_update(t, registration);
+      })
     .then(function(registered_worker) {
         worker = registered_worker;
         return wait_for_state(t, worker, 'activated');
@@ -17,19 +22,22 @@ async_test(function(t) {
     .then(function() {
         return navigator.serviceWorker.register(worker_url, { scope: scope });
       })
-    .then(function(registered_worker) {
-        assert_equals(registered_worker, worker,
-                      'register should resolve to the same worker');
-        assert_equals(registered_worker.state, 'activated',
-                      'the worker should be in state "activated"');
+    .then(function(registration) {
+        assert_equals(previous_registration, registration,
+                      'register should resolve to the same registration');
+        // FIXME: When crbug.com/400602 is fixed, assert that active equals the
+        // original worker.
+        assert_not_equals(registration.active, worker,
+                          'register should resolve to the same worker');
+        assert_equals(registration.active.state, 'activated',
+                     'the worker should be in state "activated"');
         service_worker_unregister_and_done(t, scope);
       })
     .catch(unreached_rejection(t));
-}, 'Subsequent registrations resolve to the same worker');
+}, 'Subsequent registrations resolve to the same registration object');
 
 async_test(function(t) {
   var scope = 'scope/concurrent-register';
-  var worker;
 
   navigator.serviceWorker.unregister(scope)
     .then(function() {
@@ -40,33 +48,34 @@ async_test(function(t) {
         }
         return Promise.all(promises);
       })
-    .then(function(workers) {
-        workers.forEach(function(worker) {
-            assert_equals(worker, workers[0],
-                          'register should resolve to the same worker');
+    .then(function(registrations) {
+        registrations.forEach(function(registration) {
+            assert_equals(registration, registrations[0],
+                          'register should resolve to the same registration');
         });
         service_worker_unregister_and_done(t, scope);
       })
     .catch(unreached_rejection(t));
-}, 'Concurrent registrations resolve to the same worker');
+}, 'Concurrent registrations resolve to the same registration object');
 
 async_test(function(t) {
     var scope = 'scope/multiple-frames';
-    var worker;
+    var previous_registration;
 
     service_worker_unregister_and_register(t, worker_url, scope)
-      .then(function(registered_worker) {
-          worker = registered_worker;
+      .then(function(registration) {
+          previous_registration = registration;
           return with_iframe('nothing-here.html');
         })
       .then(function(frame) {
           return frame.contentWindow.navigator.serviceWorker.register(
               worker_url, { scope: scope });
         })
-      .then(function(registered_worker) {
-          assert_not_equals(registered_worker, worker);
+      .then(function(registration) {
+          assert_not_equals(previous_registration, registration);
           service_worker_unregister_and_done(t, scope);
         })
       .catch(unreached_rejection(t));
-  }, 'Registrations in separate frames resolve to different workers');
+  }, 'Registrations in separate frames resolve to different ' +
+         'registration objects');
 </script>