Remove uses of unittest in the HTML tests where possible.

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

 // Copyright (c) 2011, 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 SvgElementTest;
 import 'dart:html';
 import 'dart:svg' as svg;
-import 'package:expect/expect.dart';
-import 'package:unittest/html_individual_config.dart';
-import 'package:unittest/unittest.dart';
+
+import 'package:expect/minitest.dart';
 
 main() {
-  useHtmlIndividualConfiguration();
-
   var isSvgSvgElement =
       predicate((x) => x is svg.SvgSvgElement, 'is a SvgSvgElement');
 
   List<String> _nodeStrings(Iterable<Node> input) {
     final out = new List<String>();
     for (Node n in input) {
       if (n is Element) {
         Element e = n;
         out.add(e.tagName);
       } else {
@@ skipping 15 matching lines @@
   }
   group('additionalConstructors', () {
     test('valid', () {
       final svgContent =
           "<svg version=\"1.1\">\n"
           "  <circle></circle>\n"
           "  <path></path>\n"
           "</svg>";
       final el = new svg.SvgElement.svg(svgContent);
       expect(el, isSvgSvgElement);
-      expect(el.innerHtml, anyOf("<circle></circle><path></path>", '<circle '
+      expect(el.innerHtml, anyOf(["<circle></circle><path></path>", '<circle '
           'xmlns="http://www.w3.org/2000/svg" /><path '
-          'xmlns="http://www.w3.org/2000/svg" />'));
-      expect(el.outerHtml, anyOf(svgContent,
+          'xmlns="http://www.w3.org/2000/svg" />']));
+      expect(el.outerHtml, anyOf([svgContent,
           '<svg xmlns="http://www.w3.org/2000/svg" version="1.1">\n  '
-          '<circle />\n  <path />\n</svg>'));
+          '<circle />\n  <path />\n</svg>']));
     });
 
     test('has no parent', () =>
       expect(new svg.SvgElement.svg('<circle/>').parent, isNull)
     );
 
     test('empty', () {
       expect(() => new svg.SvgElement.svg(""), throwsStateError);
     });
 
@@ skipping 399 matching lines @@
   group('PathElement', () {
     test('pathSegList', () {
       svg.PathElement path =
           new svg.SvgElement.svg('<path d="M 100 100 L 300 100 L 200 300 z"/>');
       for (var seg in path.pathSegList) {
         expect(seg is svg.PathSeg, isTrue);
       }
     });
   });
 }