Remove uses of unittest in the HTML tests where possible.

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

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file
 
-library NodeListTest;
-import 'package:unittest/unittest.dart';
-import 'package:unittest/html_config.dart';
 import 'dart:html';
 
+import 'package:expect/minitest.dart';
+
 main() {
-  useHtmlConfiguration();
-
   var isElement = predicate((x) => x is Element, 'is an Element');
   var isCanvasElement =
       predicate((x) => x is CanvasElement, 'is a CanvasElement');
   var isDivElement = predicate((x) => x is DivElement, 'is a isDivElement');
 
   var div = new DivElement();
   div.id = 'test';
   document.body.append(div);
 
   div.nodes.addAll([
@@ skipping 15 matching lines @@
   test('document.queryAll', () {
       List<Element> all1 = queryAll('*');
       List<Element> all2 = document.queryAll('*');
       expect(all1.length, equals(all2.length));
       for (var i = 0; i < all1.length; ++i) {
         expect(all1[i], equals(all2[i]));
       }
     });
 
   test('queryAll-canvas', () {
-      List<CanvasElement> all = queryAll('canvas');
+      var all = queryAll('canvas');
       for (var e in all) {
         expect(e, isCanvasElement);
       }
       expect(all.length, equals(2));
     });
 
   test('queryAll-contains', () {
       List<Element> all = queryAll('*');
       for (var e in all) {
         expect(all.contains(e), isTrue);
       }
     });
 
   test('queryAll-where', () {
       List<Element> all = queryAll('*');
-      Iterable<CanvasElement> canvases = all.where((e) => e is CanvasElement);
+      var canvases = all.where((e) => e is CanvasElement);
       for (var e in canvases) {
         expect(e is CanvasElement, isTrue);
       }
       expect(canvases.length, equals(2));
     });
 
   test('node.queryAll', () {
       List<Element> list = div.queryAll('*');
       expect(list.length, equals(5));
       expect(list[0], isDivElement);
       expect(list[1], isCanvasElement);
       expect(list[2], isDivElement);
       expect(list[3], isDivElement);
       expect(list[4], isCanvasElement);
     });
 
   test('immutable', () {
       List<Element> list = div.queryAll('*');
       int len = list.length;
       expect(() { list.add(new DivElement()); }, throwsUnsupportedError);
       expect(list.length, equals(len));
     });
 }