Rename XMLHttpRequest to HttpRequest.

samples/newissues/newissues.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.
 
 #import('dart:html');
 #import('dart:json');
 
 /**
  *  Issue wraps JSON structure that describes a bug.
  */
@@ skipping 23 matching lines @@
  */
 void processJson(Dynamic data) {
   StringBuffer buffer = new StringBuffer("");
   for (Issue issue in getIssues(data)) {
     buffer.add(issue.toString());
   }
   query("#container").innerHTML = buffer.toString();
 }
 
 /**
- * Sends a XMLHTTPRequest and returns a future fo the date.
+ * Sends a HTTPRequest and returns a future fo the date.
  */
 Future<Dynamic> requestJson(String url) {
   Completer c = new Completer<Dynamic>();
-  void callback(XMLHttpRequest xhr) {
-    if (xhr.readyState == XMLHttpRequest.DONE) {
+  void callback(HttpRequest xhr) {
+    if (xhr.readyState == HttpRequest.DONE) {
       c.complete(JSON.parse(xhr.response));
     }
   };
-  new XMLHttpRequest.get(url, callback);
+  new HttpRequest.get(url, callback);
   return c.future;
 }
 
 void main() {
   // Requests new issues (can=new) from the Dart issue database.
   final String url =
     "https://code.google.com/feeds/issues/p/dart/issues/full?alt=json&can=new";
   requestJson(url).then(processJson);
 }