Updating dwc for breaking changes that will be part of the next sdk

test/analyzer_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 analyzer_test;
 
 import 'package:html5lib/dom.dart';
 import 'package:html5lib/parser.dart';
 import 'package:unittest/unittest.dart';
 import 'package:unittest/vm_config.dart';
@@ skipping 750 matching lines @@
       var fileInfo = analyzeFiles(files);
       var info = fileInfo['index.html'];
       expect(info.components.keys, equals(['x-bar', 'x-foo']));
 
       var compInfo = fileInfo['foo.html'].declaredComponents[0];
       expect(info.query('x-foo').component, equals(compInfo));
       compInfo = fileInfo['bar.html'].declaredComponents[0];
       expect(info.query('x-bar').component, equals(compInfo));
     });
   });
-}
+}