Worker: Move close() from WorkerGlobalScope to derived interfaces

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',
-                       close: 'function',
                        registration: 'object',
                        skipWaiting: 'function',
 
                        onactivate: EVENT_HANDLER,
                        onfetch: EVENT_HANDLER,
                        oninstall: EVENT_HANDLER,
                        onmessage: EVENT_HANDLER
                      });
   }, 'ServiceWorkerGlobalScope');
 
@@ skipping 86 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');