Modified unittest to use new argument syntax.

tests/html/native_gc_test.dart

 #library('NativeGCTest');
 #import('../../pkg/unittest/unittest.dart');
 #import('../../pkg/unittest/html_config.dart');
 #import('dart:html');
 
 main() {
   useHtmlConfiguration();
 
   test('EventListener', () {
       final int N = 1000000;
       final int M = 1000;
 
       var div;
       for (int i = 0; i < M; ++i) {
         // This memory should be freed when the listener below is
         // collected.
         List l = new List(N);
 
         // Record the iteration number.
         l[N - 1] = i;
 
         div = new Element.tag('div');
         div.on['test'].add((_) {
             // Only the final iteration's listener should be invoked.
             // Note: the reference to l keeps the entire list alive.
-            Expect.equals(M - 1, l[N - 1]);
+            expect(l[N - 1], M - 1);
           }, false);
       }
 
       final event = new Event('test');
       div.on['test'].dispatch(event);
   });
 
   test('WindowEventListener', () {
     Element testDiv = new DivElement();
     testDiv.id = '#TestDiv';
     document.body.nodes.add(testDiv);
     window.on.message.add((e) => testDiv.click());
 
     for (int i = 0; i < 100; ++i) {
       triggerMajorGC();
     }
 
     testDiv.on.click.add(expectAsync1((e) {}));
     window.postMessage('test', '*');
   });
 }
 
 void triggerMajorGC() {
   List list = new List(1000000);
   Element div = new DivElement();
   div.on.click.add((e) => print(list[0]));
 }