Upstream service worker `fetch` test to WPT

third_party/WebKit/LayoutTests/external/wpt/service-workers/service-worker/resources/fetch-request-css-cross-origin-mime-check-worker.js

-importScripts('../../resources/get-host-info.js');
-importScripts('test-helpers.js');
+importScripts('/common/get-host-info.sub.js');
+importScripts('test-helpers.sub.js');
 
 self.addEventListener('fetch', function(event) {
     if (event.request.url.indexOf('cross-origin-css.css') != -1) {
       event.respondWith(fetch(
-          get_host_info()['HTTP_REMOTE_ORIGIN'] + base_path() +
+          get_host_info()['HTTPS_REMOTE_ORIGIN'] + base_path() +
           'fetch-request-css-cross-origin-mime-check-cross.css',
           {mode: 'no-cors'}));
     } else if (event.request.url.indexOf('cross-origin-html.css') != -1) {
       event.respondWith(fetch(
-          get_host_info()['HTTP_REMOTE_ORIGIN'] + base_path() +
+          get_host_info()['HTTPS_REMOTE_ORIGIN'] + base_path() +
           'fetch-request-css-cross-origin-mime-check-cross.html',
           {mode: 'no-cors'}));
     } else if (event.request.url.indexOf('synthetic.css') != -1) {
       event.respondWith(new Response("#synthetic { color: blue; }"));
     } else {
       event.respondWith(fetch(event.request));
     }
   });