Don't auto-send credentials on XHR.get

tests/html/xhr_cross_origin_test.dart

+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+#library('XHRCrossOriginTest');
+#import('../../lib/unittest/unittest.dart');
+#import('../../lib/unittest/html_config.dart');
+#import('dart:html');
+#import('dart:json');
+
+main() {
+  useHtmlConfiguration();
+
+  test('XHR Cross-domain', () {
+    var xhr = new XMLHttpRequest();
+    var url = "https://code.google.com/feeds/issues/p/dart/issues/full?alt=json";
+    xhr.open('GET', url, true);
+    var validate = expectAsync1((data) {
+      expect(data, contains('feed'));
+      expect(data['feed'], contains('entry'));
+      expect(data is Map, isTrue);
+    });
+    xhr.on.readyStateChange.add((e) {
+      guardAsync(() {
+        if (xhr.readyState == XMLHttpRequest.DONE) {
+          validate(JSON.parse(xhr.response));
+        }
+      });
+    });
+    xhr.send();
+  });
+
+  test('XHR.get Cross-domain', () {
+    var url = "https://code.google.com/feeds/issues/p/dart/issues/full?alt=json";
+    new XMLHttpRequest.get(url, expectAsync1((xhr) {
+      var data = JSON.parse(xhr.response);
+      expect(data, contains('feed'));
+      expect(data['feed'], contains('entry'));
+      expect(data is Map, isTrue);
+    }));
+  });

[sra1, 2012/08/14 21:44:18]

Add a comment saying why there is not getWithCredentials test

+}