inspector/css/add-css-property.html

Description:
This test is flaky timing out on Mac wk1 Debug.The flakey failures are apparent throughout the visible history.

History:
https://results.webkit.org/?suite=layout-tests&test=inspector%2Fcss%2Fadd-css-property.html&platform=mac&flavor=wk1&style=debug&limit=50000

Diff:
--- /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/inspector/css/add-css-property-expected.txt
+++ /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/inspector/css/add-css-property-actual.txt
@@ -1,20 +1,4 @@
+FAIL: Timed out waiting for notifyDone to be called
 Testing that CSSStyleDeclaration updates after inserting new CSS properties.
 
 
-== Running test suite: AddCSSProperty
--- Running test case: AddCSSProperty.AppendAfterMissingSemicolon
-PASS: `color: green` property should be appended.
-
--- Running test case: AddCSSProperty.InsertBeforeAndAfter
-PASS: `color: green` property should be inserted before the first property.
-PASS: `display: block` property should be appended at the end.
-
--- Running test case: AddCSSProperty.InsertBetween
-PASS: `font-family: fantasy` property should be inserted after the first property.
-
--- Running test case: AddCSSProperty.AppendAfterCommentedOutProperty
-PASS: `display: inline` property should be appended.
-
--- Running test case: AddCSSProperty.AppendAfterCommentedOutPropertyWithoutSemicolon
-PASS: `display: inline` property should be appended.
-