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

tests/html/html.status

 # 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.
 
 event_test: Skip  # Issue 1996
 interactive_test: Skip # Must be run manually.
 dromaeo_smoke_test: Skip # Issue 14521, 8257
 custom/template_wrappers_test: Pass, Fail # Issue 16656 (Chrome 33 regression)
 [ $runtime == drt || $runtime == dartium ]
 custom/template_wrappers_test: Pass # Issue 16656 Override others
@@ skipping 194 matching lines @@
 xhr_test/json: Fail # IE10 returns string, not JSON object
 xsltprocessor_test/supported: Fail
 
 [ $runtime == ie9 || $runtime == ie10 ]
 custom/document_register_type_extensions_test/construction: Fail # Issue 13193
 custom/element_upgrade_test: Fail # Issue 18247
 worker_api_test: Fail # IE does not support URL.createObjectURL in web workers.
 
 [ $runtime == ie9 ]
 event_customevent_test: Fail # Issue 14170
-isolates_test: Timeout # Issue 13027
+isolates_test: Skip # Issue 13027
 blob_constructor_test: Fail
 custom/document_register_type_extensions_test/namespaces: Fail # Issue 13193
 dom_constructors_test: Fail
 element_test/click: Fail                # IE does not support firing this event.
 filereader_test: Fail   # Not supported.
 form_element_test: Fail # Issue 4793.
 localstorage_test: Fail
 postmessage_structured_test: Skip   # BUG(5685): times out.
 serialized_script_value_test: Fail
 url_test: Fail              # IE9 does not support createObjectURL (it is supported in IE10)
 canvasrenderingcontext2d_test/drawImage_video_element: Fail # IE does not support drawImage w/ video element
 canvasrenderingcontext2d_test/drawImage_video_element_dataUrl: Fail # IE does not support drawImage w/ video element
 canvasrenderingcontext2d_test/drawImage_image_element: Pass, Fail # Issue: 11416
 input_element_test/attributes: Fail # IE returns null while others ''
 xhr_cross_origin_test: Skip # Issue 12920
 xhr_test/json: Fail # IE9 returns null because of unsupported type
 js_test: RuntimeError # Issue 14645
-custom: Pass, Fail, Timeout # Issue 16717
-custom_elements_test: Pass, Fail, Timeout # Issue 16717
+custom: Skip # Issue 16717
+custom_elements_test: Skip # Issue 16717
 
 # IE9 Feature support statuses-
 # All changes should be accompanied by platform support annotation changes.
 audiobuffersourcenode_test/supported: Fail
 audiocontext_test/supported: Fail
 cache_test/supported: Fail
 crypto_test/supported: Fail
 css_test/supportsPointConversions: Fail
 document_test/supports_cssCanvasContext: Fail
 element_types_test/supported_content: Fail
@@ skipping 216 matching lines @@
 events_test: StaticWarning
 htmlelement_test: StaticWarning
 localstorage_test: StaticWarning
 mutationobserver_test: StaticWarning
 track_element_constructor_test: StaticWarning
 transferables_test: StaticWarning
 typed_arrays_range_checks_test: StaticWarning
 typing_test: StaticWarning
 webgl_1_test: StaticWarning
 window_nosuchmethod_test: StaticWarning