status files: trying out new SkipSlow flag

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.
 
 [ $unchecked ]
 mirrors/redirecting_factory_different_type_test: SkipByDesign # Tests type checks.
 
 [ $csp ]
 # Deferred loading does not work from an isolate in CSP-mode
 async/deferred/deferred_in_isolate_test: Skip # Issue 16898
@@ skipping 192 matching lines @@
 [ $compiler == dart2js && $minified ]
 mirrors/mirrors_used_get_name_test: RuntimeError
 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 == chrome || $runtime == ff || $runtime == ContentShellOnAndroid ]
-convert/streamed_conversion_utf8_encode_test: Skip # Times out. Issue 22050
-convert/streamed_conversion_json_utf8_encode_test: Skip # Times out. Issue 22050
-convert/streamed_conversion_json_utf8_decode_test: Skip # Times out. Issue 22050
-async/slow_consumer2_test: Skip # Times out. Issue 22050
-async/stream_timeout_test: Skip # Times out. Issue 22050
+convert/streamed_conversion_utf8_encode_test: SkipSlow # Times out. Issue 22050
+convert/streamed_conversion_json_utf8_encode_test: SkipSlow # Times out. Issue 22050
+convert/streamed_conversion_json_utf8_decode_test: SkipSlow # Times out. Issue 22050
+async/slow_consumer2_test: SkipSlow # Times out. Issue 22050
+async/stream_timeout_test: SkipSlow # Times out. Issue 22050
 
 [ $compiler == dart2js ]
 typed_data/typed_data_hierarchy_int64_test: RuntimeError # Issue 10275
 typed_data/int32x4_bigint_test: RuntimeError # Issue 1533
 typed_data/int64_list_load_store_test: RuntimeError # Issue 10275
 
 [ $runtime == opera ]
 async/multiple_timer_test: Pass, Fail # Probably issue 14734
 
 [ $runtime == opera && $system == windows]
@@ skipping 27 matching lines @@
 [ $compiler == none && $runtime == drt && $system == windows ]
 async/multiple_timer_test: Fail, Pass # See Issue 10982
 async/timer_test: Fail, Pass # See Issue 10982
 
 [ $compiler == none && $runtime == dartium ]
 async/schedule_microtask5_test: Pass, Timeout # Issue 13719: Please triage this failure.
 async/timer_cancel2_test: Pass, Timeout # Issue 13719: Please triage this failure.
 
 [$compiler == none && $runtime == ContentShellOnAndroid ]
 async/stream_timeout_test: RuntimeError, Pass # Issue 19127
-async/slow_consumer3_test: Skip # Times out flakily. Issue 20956
-async/slow_consumer2_test: Skip # Times out flakily. Issue 20956
-convert/streamed_conversion_utf8_encode_test: Skip # Times out or passes. Issue 19127
-convert/streamed_conversion_utf8_decode_test: Skip # Times out or passes. Issue 19127
-mirrors/lazy_static_test: Skip # Times out. Issue 19127
-mirrors/mirrors_reader_test: Skip # Times out. Issue 19127
+async/slow_consumer3_test: SkipSlow # Times out flakily. Issue 20956
+async/slow_consumer2_test: SkipSlow # Times out flakily. Issue 20956
+convert/streamed_conversion_utf8_encode_test: SkipSlow # Times out or passes. Issue 19127
+convert/streamed_conversion_utf8_decode_test: SkipSlow # Times out or passes. Issue 19127
+mirrors/lazy_static_test: SkipSlow # Times out. Issue 19127
+mirrors/mirrors_reader_test: SkipSlow # Times out. Issue 19127
 
 [ $compiler == dart2js && $runtime == safarimobilesim ]
-mirrors/mirrors_reader_test: Skip # Times out. Issue 20806.
+mirrors/mirrors_reader_test: SkipSlow # Times out. Issue 20806.
 
 [ $compiler == dart2dart ]
 # Deferred loading is not supported by dart2dart.
 async/deferred/deferred_in_isolate_test: Skip # Issue 17523
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
 # Dart vm does not support spawn from a dom-enabled isolate.
 async/deferred/deferred_in_isolate_test: RuntimeError # Issue 16209
 
 [ $compiler == dart2js && $runtime == jsshell ]
@@ skipping 39 matching lines @@
 
 [ $mode == debug && $arch == ia32 && $system == windows ]
 convert/streamed_conversion_json_utf8_decode_test: Skip  # Verification OOM.
 
 [ $mode == debug && $arch != ia32 && $arch != x64 && $arch != simarm ]
 convert/streamed_conversion_json_utf8_decode_test: Skip  # Verification not yet implemented.
 
 [ $runtime == vm && $mode == debug && $builder_tag == asan ]
 mirrors/immutable_collections_test: Skip  # Timeout.
 convert/streamed_conversion_json_utf8_decode_test: Skip  # Timeout.