Update client side navigator.connect API to use ServicePortCollection [1/3]

LayoutTests/http/tests/navigatorconnect/resources/connect-helper.js

 if ("importScripts" in self) {
   importScripts("/resources/testharness-helpers.js");
+  importScripts("test-helpers.js");
 }
 
 self.onmessage = function(e) {
-  navigator.connect(e.data.connect)
+  var service = e.data.connect;
+  first_to_resolve([wrap_in_port(navigator.services.connect(service)), navigator.connect(service)])
     .then(function(port) {
         e.data.port.postMessage({success: true, result: port}, [port]);
       })
     .catch(function(error) {
         // Not all errors can be serialized as a SerializedScriptValue, so
         // convert to JSON and parse to get just the bits that certainly can.
         e.data.port.postMessage(
           {success: false, result: JSON.parse(stringifyDOMObject(error))});
       });
 };