Mark a lot of ie9 tests as skip instead of timeout or flaky timeout.

tests/lib/lib.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.
 
 [ $checked && $compiler != dartanalyzer && $compiler != dart2analyzer && $runtime != dartium ]
 mirrors/regress_16321_test/01: CompileTimeError # Issue 16351
 
 [ $checked && $compiler == none && ($runtime == dartium || $runtime == drt) ]
 mirrors/regress_16321_test/01: RunTimeError # Issue 16351
 
 [ $compiler == dart2js && $checked && $runtime == ie9 ]
 convert/ascii_test: Skip # http://dartbug.com/15498
 convert/streamed_conversion_json_utf8_encode_test: Skip # http://dartbug.com/15498
 convert/streamed_conversion_utf8_encode_test: Skip # http://dartbug.com/15498
 
-mirrors/mirrors_reader_test: Timeout, Slow, RuntimeError # Issue 16589
+mirrors/mirrors_reader_test: Skip # Issue 16589
 
 [ $csp ]
 mirrors/delegate_test: RuntimeError # Issue 13864
 async/deferred/deferred_in_isolate_test: RuntimeError # Issue 16898
 mirrors/deferred_mirrors_metadata_test: Fail # Issue 16898
 mirrors/deferred_mirrors_metatarget_test: Fail # Issue 16898
 
 [ $compiler == dart2js && $checked && $runtime == drt && $nocsp ]
 async/stream_transform_test: RuntimeError # Issue 16719
 
@@ skipping 186 matching lines @@
 mirrors/mirrors_used_get_name2_test: RuntimeError
 
 [ $runtime == ff ]
 # FF setTimeout can fire early: https://bugzilla.mozilla.org/show_bug.cgi?id=291386
 convert/streamed_conversion_utf8_decode_test: Pass, Slow  # Issue 12029
 mirrors/mirrors_reader_test: Timeout, Slow, RuntimeError # Issue 16589
 
 [ $runtime == ie9 ]
 # IE9 doesn't support typed arrays.
 typed_data/*: Fail # Issue 11971
-convert/chunked_conversion_utf88_test: Pass, Slow, Timeout  # Issue 12029
-convert/streamed_conversion_json_utf8_decode_test: Pass, Timeout # Issue 12029
-async/deferred/*: Pass, Fail, Timeout # http://dartbug.com/12635
+convert/chunked_conversion_utf88_test: Skip  # Issue 12029
+convert/streamed_conversion_json_utf8_decode_test: Skip # Issue 12029
+async/deferred/*: Skip # http://dartbug.com/12635
 mirrors/deferred*: Pass, Fail # http://dartbug.com/12635
-convert/streamed_conversion_utf8_decode_test: Pass, Timeout # http://dartbug.com/12768
+convert/streamed_conversion_utf8_decode_test: Skip # http://dartbug.com/12768
 convert/utf85_test: Skip # Issue 12029.
 convert/json_util_test: Fail # Issue 16109
 mirrors/mirrors_reader_test: Slow, RuntimeError # Issue 16589
 
 [ $compiler == dart2js ]
 typed_data/typed_data_hierarchy_int64_test: RuntimeError # Issue 10275
 typed_data/int32x4_bigint_test: RuntimeError # Issue 1533
 
 [ $runtime == opera ]
 async/multiple_timer_test: Pass, Fail # Probably issue 14734
@@ skipping 79 matching lines @@
 mirrors/removed_api_test: StaticWarning, OK # Deliberately refers to undeclared members.
 
 mirrors/deferred_mirrors_metadata_test: Fail # Issue 17522
 
 [ $compiler == dart2js && $runtime == d8 && $system == windows ]
 async/*deferred*: Skip # Issue 17458
 mirrors/*deferred*: Skip # Issue 17458
 
 [ $compiler == dart2js && $mode == debug ]
 mirrors/native_class_test: Pass, Slow