Some unit test fixes

tests/html/css_test.dart

 #library('CSSTest');
 #import('../../lib/unittest/unittest.dart');
 #import('../../lib/unittest/html_config.dart');
 #import('dart:html');
 
 main() {
   useHtmlConfiguration();
   test('CSSMatrix', () {
     CSSMatrix matrix1 = new CSSMatrix();
-    Expect.equals(1, matrix1.m11.round());
-    Expect.equals(0, matrix1.m12.round());
+    expect(matrix1.m11.round(), equals(1));
+    expect(matrix1.m12.round(), isZero);
 
     CSSMatrix matrix2 = new CSSMatrix('matrix(1, 0, 0, 1, -835, 0)');
-    Expect.equals(1, matrix2.a.round());
-    Expect.equals(-835, matrix2.e.round());
+    expect(matrix2.a.round(), equals(1));
+    expect(matrix2.e.round(), equals(-835));
   });
   test('Point', () {
     Element element = new Element.tag('div');
     element.attributes['style'] =
       '''
       position: absolute;
       width: 60px;
       height: 100px;
       left: 0px;
       top: 0px;
       background-color: red;
       -webkit-transform: translate3d(250px, 100px, 0px) perspective(500px) rotateX(30deg);
       ''';
     document.body.nodes.add(element);
 
     Point point = new Point(5, 2);
     checkPoint(5, 2, point);
     checkPoint(256, 110, window.webkitConvertPointFromNodeToPage(element, point));
     point.y = 100;
     checkPoint(5, 100, point);
     checkPoint(254, 196, window.webkitConvertPointFromNodeToPage(element, point));
   });
 }
 
 void checkPoint(expectedX, expectedY, Point point) {
-  Expect.equals(expectedX, point.x.round(), 'Wrong point.x');
-  Expect.equals(expectedY, point.y.round(), 'Wrong point.y');
+  expect(point.x.round(), equals(expectedX), 'Wrong point.x');
+  expect(point.y.round(), equals(expectedY), 'Wrong point.y');
 }