New expectation functions plus convert old tests to use these.

tests/dom/history_test.dart

Index: tests/dom/history_test.dart
===================================================================
--- tests/dom/history_test.dart	(revision 8345)
+++ tests/dom/history_test.dart	(working copy)
@@ -7,12 +7,12 @@
   useDomConfiguration();
   test('History', () {
     window.history.pushState(null, document.title, '?foo=bar');
-    expect(window.history.length).equals(2);
+    expect(window.history.length, equals(2));
     window.history.back();
-    expect(window.location.href.endsWith('foo=bar')).isTrue();
+    expect(window.location.href.endsWith('foo=bar'), isTrue);
 
     window.history.replaceState(null, document.title, '?foo=baz');
-    Expect.equals(2, window.history.length);
-    expect(window.location.href.endsWith('foo=baz')).isTrue();
+    expect(window.history.length, equals(2));
+    expect(window.location.href.endsWith('foo=baz'), isTrue);
   });
 }