ServiceWorker: Make APIs that return ServiceWorkerRegistration coin a new JS object (3/3)

LayoutTests/http/tests/serviceworker/getregistration.html

Index: LayoutTests/http/tests/serviceworker/getregistration.html
diff --git a/LayoutTests/http/tests/serviceworker/getregistration.html b/LayoutTests/http/tests/serviceworker/getregistration.html
index da50bb3ff5cf708e2016f57e8ae8974542e41dad..95abb5829a7c07b7846db35840b3fcb8fba950e0 100644
--- a/LayoutTests/http/tests/serviceworker/getregistration.html
+++ b/LayoutTests/http/tests/serviceworker/getregistration.html
@@ -24,8 +24,10 @@ async_test(function(t) {
           return navigator.serviceWorker.getRegistration(scope);
         })
       .then(function(value) {
-          assert_equals(value, registration,
-                        'getRegistration should resolve with registration');
+          assert_registration_equals(value, registration);
+          assert_not_equals(
+            value, registration,
+            'getRegistration should resolve to a new registration object');
           service_worker_unregister_and_done(t, scope);
         })
       .catch(unreached_rejection(t));
@@ -42,8 +44,7 @@ async_test(function(t) {
           return navigator.serviceWorker.getRegistration(documentURL);
         })
       .then(function(value) {
-          assert_equals(value, registration,
-                        'getRegistration should resolve with registration');
+          assert_registration_equals(value, registration);
           service_worker_unregister_and_done(t, scope);
         })
       .catch(unreached_rejection(t));