Start cleaning up the HTML tests.

pkg/dev_compiler/test/codegen/lib/html/filteredelementlist_test.dart

-library filteredelementlist_test;
-
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_config.dart';
 import 'dart:html';
 import 'dart:html_common';
 
+import 'package:minitest/minitest.dart';
+
 main() {
   var t1 = new Text('T1'),
       t2 = new Text('T2'),
       t3 = new Text('T3'),
       t4 = new Text('T4');
 
   var d1 = new DivElement(),
       d2 = new DivElement(),
       d3 = new DivElement();
 
   createTestDiv() {
     var testDiv = new DivElement();
     testDiv
       ..append(t1)
       ..append(d1)
       ..append(t2)
       ..append(d2)
       ..append(t3)
       ..append(d3)
       ..append(t4);
     return testDiv;
   }
 
-  useHtmlConfiguration();
-
   test('FilteredElementList.insert test', () {
     var i = new DivElement();
 
     // Insert before first element
     var nodeList = createTestDiv();
     var elementList = new FilteredElementList(nodeList);
     elementList.insert(0, i);
     expect(nodeList.childNodes[0], t1);
     expect(nodeList.childNodes[1], i);
     expect(nodeList.childNodes[2], d1);
@@ skipping 45 matching lines @@
     elementList.insertAll(2, it);
     expect(nodeList.childNodes[4], t3);
     expect(nodeList.childNodes[5], i1);
     expect(nodeList.childNodes[6], i2);
     expect(nodeList.childNodes[7], d3);
   });
 
  test('FilteredElementList.insertAndRemove', () {
     var emptyDiv = new DivElement();
     var elementList = new FilteredElementList(emptyDiv);
-    expect(() => elementList[0], throwsA(isRangeError));
-    expect(() => elementList.insert(2, new BRElement()), throwsA(isRangeError));
+    expect(() => elementList[0], throwsRangeError);
+    expect(() => elementList.insert(2, new BRElement()), throwsRangeError);
     var br = new BRElement();
     elementList.insert(0, br);
     expect(elementList.removeLast(), br);
     elementList.add(br);
     expect(elementList.remove(br), isTrue);
     var br2 = new BRElement();
     elementList.add(br);
     expect(elementList.remove(br2), isFalse);
     expect(elementList[0], br);
-    expect(() => elementList[1], throwsA(isRangeError));
+    expect(() => elementList[1], throwsRangeError);
  });
 }