Upstream service worker navigation tests to WPT

third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/navigation-redirect-to-http-worker.js

 importScripts('/resources/testharness.js');
 
 self.addEventListener('fetch', function(event) {
     event.respondWith(new Promise(function(resolve) {
       Promise.resolve()
         .then(function() {
             assert_equals(
                 event.request.redirect, 'manual',
                 'The redirect mode of navigation request must be manual.');
             return fetch(event.request);
           })
         .then(function(response) {
             assert_equals(
                 response.type, 'opaqueredirect',
                 'The response type of 302 response must be opaqueredirect.');
             resolve(new Response('OK'));
           })
         .catch(function(error) {
             resolve(new Response('Failed in SW: ' + error));
           });
     }));
   });