Adjust offset test for Windows fonts.

tests/html/element_offset_test.dart

 // Copyright (c) 2013, 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 element_offset_test;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_individual_config.dart';
 import 'dart:async';
 import 'dart:html';
 
@@ skipping 112 matching lines @@
       expect(item1.documentOffset.x, 278);
       expect(item1.documentOffset.y, inInclusiveRange(175, 222));
 
       expect(bar.documentOffset.x, 90);
       expect(bar.documentOffset.y, 8);
 
       expect(baz.documentOffset.x, 7090);
       expect(baz.documentOffset.y, 608);
 
       expect(qux.documentOffset.x, 8);
-      expect(qux.documentOffset.y, inInclusiveRange(221, 232));
+      expect(qux.documentOffset.y, inInclusiveRange(221, 240));
 
       expect(quux.documentOffset.x, 8);
-      expect(quux.documentOffset.y, inInclusiveRange(221, 232));
+      expect(quux.documentOffset.y, inInclusiveRange(221, 240));
     });
   });
 }