Import w3c tests for the service workers

third_party/WebKit/LayoutTests/imported/wpt/service-workers/service-worker/resources/fetch-event-network-error-worker.js

 // Test that multiple fetch handlers do not confuse the implementation.
 self.addEventListener('fetch', function(event) {});
 
 self.addEventListener('fetch', function(event) {
     var testcase = new URL(event.request.url).search;
     switch (testcase) {
     case '?reject':
       event.respondWith(Promise.reject());
       break;
     case '?prevent-default':
       event.preventDefault();
       break;
     case '?prevent-default-and-respond-with':
       event.preventDefault();
       break;
     case '?unused-body':
       event.respondWith(new Response('body'));
       break;
     case '?used-body':
       var res = new Response('body');
       res.text();
       event.respondWith(res);
       break;
     case '?unused-fetched-body':
-      event.respondWith(fetch('progressive.php').then(function(res){
+      event.respondWith(fetch('other.html').then(function(res){
           return res;
         }));
       break;
     case '?used-fetched-body':
-      event.respondWith(fetch('progressive.php').then(function(res){
+      event.respondWith(fetch('other.html').then(function(res){
           res.text();
           return res;
         }));
       break;
     }
   });
 
 self.addEventListener('fetch', function(event) {});
 
 self.addEventListener('fetch', function(event) {
     var testcase = new URL(event.request.url).search;
     if (testcase == '?prevent-default-and-respond-with')
       event.respondWith(new Response('responding!'));
   });
 
 self.addEventListener('fetch', function(event) {});