Fixing xhr_test's responseType test.

tests/html/xhr_test.dart

Index: tests/html/xhr_test.dart
diff --git a/tests/html/xhr_test.dart b/tests/html/xhr_test.dart
index ef1d94eecec14a8ff251721945c37a85f547e4c3..d590acec6f227117f48a4e5c8f6bc69f4c84529a 100644
--- a/tests/html/xhr_test.dart
+++ b/tests/html/xhr_test.dart
@@ -126,9 +126,9 @@ main() {
 
     test('XHR.request responseType', () {
       if (ArrayBuffer.supported) {
-        HttpRequest.request(url, responseType: 'ArrayBuffer').then(
+        HttpRequest.request(url, responseType: 'arraybuffer').then(

[Emily Fortuna, 2013/02/01 00:14:47]

lgtm. can you add a comment on the appropriate function saying that the
responseType value needs to be "arraybuffer" (and the other options), so people
don't get confused? Later, enums?

           expectAsync1((xhr) {
-            validate200Response(xhr);
+            expect(xhr.status, equals(200));
             var arrayBuffer = xhr.response;
             expect(arrayBuffer, new isInstanceOf<ArrayBuffer>());
             expect(arrayBuffer, isNotNull);