Upstream service worker "register" tests to WPT

third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/register-same-scope-different-script-url.https.html

Index: third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/register-same-scope-different-script-url.https.html
diff --git a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/register-same-scope-different-script-url.https.html b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/register-same-scope-different-script-url.https.html
index 445be740951b16aaec304e1679f58981f3e3d7ba..6eb00f3071a26ed3f55ac90ca32c1b377aec23e1 100644
--- a/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/register-same-scope-different-script-url.https.html
+++ b/third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/register-same-scope-different-script-url.https.html
@@ -84,17 +84,10 @@ async_test(function(t) {
       .then(function() {
           assert_equals(registration.installing, null,
                         'on installed, installing should be null');
-          // Since the registration is not controlling any document, the new
-          // worker can immediately transition to active.
-          if (registration.waiting) {
-            assert_equals(registration.waiting.scriptURL, script2,
-                          'on installed, the second script may still be waiting');
-            assert_equals(registration.active.scriptURL, script1,
-                          'on installed, the first script may be active');
-          } else {
-            assert_equals(registration.active.scriptURL, script2,
-                          'on installed, the second script may be active');
-          }
+          assert_equals(registration.waiting.scriptURL, script2,
+                        'on installed, the second script should be waiting');
+          assert_equals(registration.active.scriptURL, script1,
+                        'on installed, the first script should be active');
           return registration.unregister();
         })
       .then(function() {