Make required dictionary members non-nullable again

third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/interfaces-worker.js

 importScripts('interfaces.js');
 importScripts('worker-testharness.js');
 
 var EVENT_HANDLER = 'object';
 
 test(function() {
     verify_interface('ServiceWorkerGlobalScope',
                      self,
                      {
                        clients: 'object',
@@ skipping 54 matching lines @@
                              delete: 'function',
                              keys: 'function'
                            });
         });
   }, 'Cache');
 
 test(function() {
     assert_equals(
         new ExtendableEvent('ExtendableEvent').type,
         'ExtendableEvent', 'Type of ExtendableEvent should be ExtendableEvent');
+    assert_throws(new TypeError, function() {
+        new FetchEvent('FetchEvent');
+    }, 'FetchEvent constructor with one argument throws');
+    assert_throws(new TypeError, function() {
+        new FetchEvent('FetchEvent', {});
+    }, 'FetchEvent constructor with empty init dict throws');
+    assert_throws(new TypeError, function() {
+        new FetchEvent('FetchEvent', {request: null});
+    }, 'FetchEvent constructor with null request member throws');
     var req = new Request('https://www.example.com/', {method: 'POST'});
     assert_equals(
         new FetchEvent('FetchEvent', {request: req}).type,
         'FetchEvent', 'Type of FetchEvent should be FetchEvent');
     assert_equals(
         new FetchEvent('FetchEvent', {request: req}).cancelable,
         false, 'Default FetchEvent.cancelable should be false');
     assert_equals(
         new FetchEvent('FetchEvent', {request: req}).bubbles,
         false, 'Default FetchEvent.bubbles should be false');
@@ skipping 22 matching lines @@
             true,
             'FetchEvent.isReload with option {isReload: true} should be true');
     assert_equals(
         new FetchEvent(
             'FetchEvent',
             {request: req, isReload: true}).request.url,
             'https://www.example.com/',
             'FetchEvent.request.url should return the value it was ' +
                 'initialized to');
   }, 'Event constructors');