Delay generation of User-Agent header to URLRequestHttpJob and accept custom User-Agent from XHR/Fe…

third_party/WebKit/LayoutTests/http/tests/fetch/resources/thorough-util.js

 var SCOPE = BASE_ORIGIN +
   '/fetch/resources/thorough-iframe.html?' + TEST_OPTIONS;
 var IFRAME_ORIGIN = BASE_ORIGIN;
 var BASE_URL = BASE_ORIGIN +
   '/serviceworker/resources/fetch-access-control.php?';
 var OTHER_BASE_URL = OTHER_ORIGIN +
   '/serviceworker/resources/fetch-access-control.php?';
 var BASE_URL_WITH_USERNAME = BASE_URL.replace('://', '://user@');
 var OTHER_BASE_URL_WITH_USERNAME = OTHER_BASE_URL.replace('://', '://user@');
 var BASE_URL_WITH_PASSWORD = BASE_URL.replace('://', '://user:pass@');
@@ skipping 84 matching lines @@
 // Functions to check the result of JSONP which is evaluated in
 // thorough-iframe.html by appending <script> element.
 var checkJsonpResult = function(expected, url, data) {
   assert_equals(data.jsonpResult,
                 expected,
                 url + ' jsonpResult should match');
 };
 var checkJsonpHeader = function(name, value, url, data) {
   assert_equals(data.jsonpResult,
                 'success',
-                url + ' jsonpResult must be success');
+                url + ' jsonpResult must be success (header check name:' +
+                    name + ')');
   assert_equals(data.headers[name],
                 value,
                 'Request header check failed url:' + url + ' name:' + name);
 };
 var checkJsonpMethod = function(method, url, data) {
   assert_equals(data.jsonpResult,
                 'success',
-                url + ' jsonpResult must be success');
+                url + ' jsonpResult must be success (method:' + method + ')');
   assert_equals(data.method,
                 method,
                 'Method must match url:' + url);
 };
 var checkJsonpAuth = function(username, password, cookie, url, data) {
   assert_equals(data.jsonpResult,
                 'success',
-                url + ' jsonpResult must be success');
+                url + ' jsonpResult must be success (username:' + username +
+                    ' password:' + password + ' cookie:' + cookie);
   assert_equals(data.username,
                 username,
                 'Username must match. url: ' + url);
   assert_equals(data.password,
                 password,
                 'Password must match. url: ' + url);
   assert_equals(data.cookie,
                 cookie,
                 'Cookie must match. url: ' + url);
 };
@@ skipping 275 matching lines @@
 
 function executeTests(test_targets) {
   for (var i = 0; i < test_targets.length; ++i) {
     promise_test(
       function(counter, t) {
         return executeTest(test_targets[counter]);
       }.bind(this, i),
       "executeTest-" + i);
   }
 }