fix polymer copy-instance-attributes feature

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 42 matching lines @@
 fixnum/test/int_64_test: Pass, Fail # Bug in JSC.
 crypto/test/hmac_sha1_test: Pass, Fail # Issue 11407.
 crypto/test/sha1_test: Fail # Issue 11407.
 stack_trace/test/trace_test: Fail # http://dartbug.com/12380
 crypto/test/sha256_test: Pass, Fail # Issue 12502
 crypto/test/hmac_sha256_test: Pass, Fail # Issue 12502
 polymer/test/attr_deserialize_test: Fail # Issue 12865, 13197
 polymer/test/attr_mustache_test: Fail # Issue 12865, 13197
 polymer/test/event_path_test: Fail # Issue 12865, 13197
 polymer/test/events_test: Fail # Issue 12865, 13197
+polymer/test/instance_attrs_test: Fail # Issue 12865, 13197
 polymer/test/prop_attr_reflection_test: Fail # Issue 12865, 13197
 
 [ $runtime == ie9 || $runtime == ie10 ]
 polymer/test/attr_deserialize_test: Fail, Timeout # Issue 12865, 13197, 13260
 polymer/test/attr_mustache_test: Fail, Timeout # Issue 12865, 13197, 13260
 polymer/test/event_path_test: Fail, Timeout # Issue 12865, 13197, 13260
 polymer/test/events_test: Fail, Timeout # Issue 12865, 13197, 13260
+polymer/test/instance_attrs_test: Fail, Timeout # Issue 12865, 13197, 13260
 polymer/test/prop_attr_reflection_test: Fail, Timeout # Issue 12865, 13197, 13260
 polymer/test/publish_attributes_test: Fail, Timeout # Issue 12865, 13197, 13260
 polymer/test/take_attributes_test: Fail, Timeout # Issue 12865, 13197, 13260
 
 [ $system == windows && ($runtime == chrome || $runtime == ff) ]
 polymer/test/attr_deserialize_test: Pass, Timeout # Issue 13260
 polymer/test/attr_mustache_test: Pass, Timeout # Issue 13260
 polymer/test/event_path_test: Pass, Timeout # Issue 13260
 polymer/test/events_test: Pass, Timeout # Issue 13260
+polymer/test/instance_attrs_test: Pass, Timeout # Issue 13260
 polymer/test/prop_attr_reflection_test: Pass, Timeout # Issue 13260
 polymer/test/publish_attributes_test: Pass, Timeout # Issue 13260
 polymer/test/take_attributes_test: Pass, Timeout # Issue 13260
 
 # Skip browser-specific tests on VM
 [ $runtime == vm ]
 path/test/browser_test: Fail, OK # Uses dart:html
 intl/test/find_default_locale_browser_test: Skip
 intl/test/date_time_format_http_request_test: Skip
 polymer/test/attr_deserialize_test: Fail, OK # Uses dart:html
@@ skipping 147 matching lines @@
 
 [ $compiler == none && $runtime == vm ]
 observe/test/observe_test: Pass, Fail # Issue 13543
 
 [ $compiler == none && $runtime == vm && $checked ]
 intl/test/message_extraction/failed_extraction_test: Pass, Fail # Issue 13543
 
 [ $compiler == none && $runtime == dartium ]
 source_maps/test/parser_test: Pass, Timeout # Issue 13719: Please triage this failure.