Upstream service worker navigation tests to WPT

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

-// TODO(horo): Service worker can be killed at some point during the test. So we
-// should use storage API instead of this global variable.
-var urls = [];
-
-self.addEventListener('message', function(event) {
-    event.data.port.postMessage({urls: urls});
-    urls = [];
-  });
-
-function get_query_params(url) {
-  var search = (new URL(url)).search;
-  if (!search) {
-    return {};
-  }
-  var ret = {};
-  var params = search.substring(1).split('&');
-  params.forEach(function(param) {
-      var element = param.split('=');
-      ret[decodeURIComponent(element[0])] = decodeURIComponent(element[1]);
-    });
-  return ret;
-}
-
-self.addEventListener('fetch', function(event) {
-    urls.push(event.request.url)
-    var params = get_query_params(event.request.url);
-    if (params['sw'] == 'gen') {
-      event.respondWith(Response.redirect(params['url']));
-    } else if (params['sw'] == 'fetch') {
-      event.respondWith(fetch(event.request));
-    } else if (params['sw'] == 'opaque') {
-      event.respondWith(fetch(
-          new Request(event.request.url, {redirect: 'manual'})));
-    } else if (params['sw'] == 'opaqueThroughCache') {
-      var url = event.request.url;
-      var cache;
-      event.respondWith(
-          self.caches.delete(url)
-            .then(function() { return self.caches.open(url); })
-            .then(function(c) {
-                cache = c;
-                return fetch(new Request(url, {redirect: 'manual'}));
-              })
-            .then(function(res) { return cache.put(event.request, res); })
-            .then(function() { return cache.match(url); }));
-    }
-  });