Dartifying dart:html type names.

tests/html/xsltprocessor_test.dart

 library XSLTProcessorTest;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_config.dart';
 import 'dart:html';
 
 main() {
 
   useHtmlConfiguration();
 
-  var isXSLTProcessor =
-      predicate((x) => x is XSLTProcessor, 'is an XSLTProcessor');
+  var isXsltProcessor =
+      predicate((x) => x is XsltProcessor, 'is an XsltProcessor');
 
   test('constructorTest', () {
-      var processor = new XSLTProcessor();
+      var processor = new XsltProcessor();
       expect(processor, isNotNull);
-      expect(processor, isXSLTProcessor);
+      expect(processor, isXsltProcessor);
     });
 }