Migrate dom tests to dart:html.

client/tests/client/dom/HistoryTest.dart

Index: client/tests/client/dom/HistoryTest.dart
diff --git a/client/tests/client/dom/HistoryTest.dart b/client/tests/client/dom/HistoryTest.dart
index 7cb61a5b7c66b667f99db0af5e643702ae4f2247..f3b9e73859e7e521c8350ecabc305df1e0409879 100644
--- a/client/tests/client/dom/HistoryTest.dart
+++ b/client/tests/client/dom/HistoryTest.dart
@@ -1,10 +1,10 @@
 #library('HistoryTest');
 #import('../../../../lib/unittest/unittest.dart');
-#import('../../../../lib/unittest/dom_config.dart');
-#import('dart:dom');
+#import('../../../../lib/unittest/html_config.dart');
+#import('dart:html');
 
 main() {
-  useDomConfiguration();
+  useHtmlConfiguration();
   test('History', () {
     window.history.pushState(null, document.title, '?foo=bar');
     expect(window.history.length).equals(2);