Removing more dom_ methods.

tests/html/safe_dom_test.dart

 library safe_dom_test;
 
 import 'dart:async';
 import 'dart:html';
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_config.dart';
 
 main() {
   useHtmlConfiguration();
 
@@ skipping 52 matching lines @@
   var doc = document.implementation.createHtmlDocument('');
 
   var contextElement;
   if (contextTag != null) {
     contextElement = doc.$dom_createElement(contextTag);
   } else {
     contextElement = doc.body;
   }
 
   if (Range.supportsCreateContextualFragment) {
-    var range = doc.$dom_createRange();
+    var range = new Range();

[blois, 2013/08/27 16:08:10]

This test requires that the range be created from the other doc. Can we have
that be public?

[Emily Fortuna, 2013/08/27 22:48:43]

fixed.

     range.selectNode(contextElement);
     return range.createContextualFragment(html);
   } else {
     contextElement.innerHtml = html;
     var fragment = new DocumentFragment();;
     while (contextElement.firstChild != null) {
       fragment.append(contextElement.firstChild);
     }
     return fragment;
   }
 }
 
 // Delay to wait for the image load to fail.
 const Duration imageLoadDelay = const Duration(milliseconds: 500);
 
 Future<bool> isSafe() {
   return new Future.delayed(imageLoadDelay).then((_) {
     window.postMessage('check_unsafe', '*');
   }).then((_) {
     return window.onMessage.where(
         (e) => e.data.startsWith('unsafe_check')).first;
   }).then((e) {
     return e.data == 'unsafe_check_passed';
   });
 }