regenerate fixed custom_elements polyfill

pkg/pkg.status

 # 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.
 
 # Don't run any test-like files that show up in packages directories. It
 # shouldn't be necessary to run "pub install" in these packages, but if you do
 # it shouldn't break the tests.
 */packages/*/*: Skip
 */*/packages/*/*: Skip
 */*/*/packages/*/*: Skip
@@ skipping 81 matching lines @@
 
 [ $runtime == opera && $compiler == dart2js ]
 intl/test/find_default_locale_browser_test: Fail
 intl/test/date_time_format_http_request_test: Skip # Timeout.
 
 [ $runtime == ie9 ]
 intl/test/date_time_format_http_request_test: Fail # Issue 8983
 mime/test/mime_multipart_transformer_test: Skip # No typed_data on IE9.
 typed_data/test/typed_buffers_test: Fail, Crash # No typed_data on IE9.
 polymer/test/instance_attrs_test: Pass, Fail # Issue 14167
-polymer/test/bind_mdv_test: Pass, Fail # Issue 16441
 
 [ $runtime == safari ]
 fixnum/test/int_64_test: Pass, Fail # Bug in JSC.
 
 # Unexplained errors only occuring on Safari.
 typed_data/test/typed_buffers_test: RuntimeError
 
 [ $runtime == ie9 || $runtime == ie10 ]
 polymer/test/bind_mdv_test: RuntimeError # Issue 14412, 13260
 polymer/test/noscript_test: RuntimeError, Pass # Issue 13260
@@ skipping 234 matching lines @@
 collection/test/algorithms_test: PubGetError
 collection/test/iterable_zip_test: PubGetError
 collection/test/priority_queue_test: PubGetError
 collection/test/unmodifiable_collection_test: PubGetError
 collection/test/wrapper_test: PubGetError
 stack_trace/test/chain_test: PubGetError
 stack_trace/test/frame_test: PubGetError
 stack_trace/test/trace_test: PubGetError
 stack_trace/test/vm_test: PubGetError