test renaming overhaul: step 4 client tests

tests/html/element_tests.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.
 
 
 expectLargeRect(ClientRect rect) {
   Expect.equals(rect.top, 0);
   Expect.equals(rect.left, 0);
   Expect.isTrue(rect.width > 100);
   Expect.isTrue(rect.height > 100);
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           classes.intersection(['foo', 'qux', 'baz']));
     });
 
     test('clear', () {
       final classes = makeClassSet();
       classes.clear();
       Expect.setEquals([], classes);
     });
   });
 }