Fix a couple of Dart style naming violations in Intl

pkg/intl/lib/src/http_request_data_reader.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.
 
 /**
  * This contains a reader that accesses data using the HttpRequest
  * facility, and thus works only in the web browser.
  */
 
 library http_request_data_reader;
 
 import 'dart:async';
 import 'dart:html';
 import 'intl_helpers.dart';
 
-class HTTPRequestDataReader implements LocaleDataReader {
+class HttpRequestDataReader implements LocaleDataReader {
 
   /** The base url from which we read the data. */
   String url;
-  HTTPRequestDataReader(this.url);
+  HttpRequestDataReader(this.url);
 
   Future read(String locale) {
     // TODO(alanknight): Remove this once it's not necessary for Chrome.
     // Without it, the tests will be flaky on Chrome. Issue 11834.
     var someNumber = new DateTime.now().millisecondsSinceEpoch;
     var request = new HttpRequest();
     request.timeout = 5000;
     return _getString('$url$locale.json?cacheBlocker=$someNumber', request)
       .then((r) => r.responseText);
   }
@@ skipping 13 matching lines @@
         completer.completeError(e);
       }
     });
 
     xhr.onError.listen(completer.completeError);
     xhr.send();
 
     return completer.future;
   }
 }