REGRESSION: (r254186) [ Mac ] inspector/css/add-rule.html is failing

[Truitt Savell]

inspector/css/add-rule.html

Description:
This test began failing after the changes in https://trac.webkit.org/changeset/254186/webkit

History:
https://results.webkit.org/?suite=layout-tests&test=inspector%2Fcss%2Fadd-rule.html

Diff:
--- /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/inspector/css/add-rule-expected.txt
+++ /Volumes/Data/slave/mojave-release-tests-wk2/build/layout-test-results/inspector/css/add-rule-actual.txt
@@ -4,14 +4,12 @@
 == Running test suite: CSS.addRule
 -- Running test case: CSS.addRule.InNonExistingInspectorStyleSheet
 PASS: Should not have any inspector style sheets for the main frame.
-PASS: Rule selector should be "body"
-PASS: Rule range should be [0:0,0:4]
-PASS: Rule origin should be "inspector"
+!! EXCEPTION: NotFoundError
+Stack Trace: #0: (anonymous) ((unknown))
 
 -- Running test case: CSS.addRule.InExistingInspectorStyleSheet
-PASS: Rule selector should be "div"
-PASS: Rule range should be [1:0,1:3]
-PASS: Rule origin should be "inspector"
+!! EXCEPTION: NotFoundError
+Stack Trace: #0: (anonymous) ((unknown))
 
 -- Running test case: CSS.addRule.ExternalStyleSheet
 PASS: Rule selector should be "div"

[Radar WebKit Bug Importer]

<rdar://problem/58413597>

[Devin Rousso]

Created attachment 387124 [details]
Patch

[BJ Burg]

Comment on attachment 387124 [details]
Patch

=mews

[WebKit Commit Bot]

Comment on attachment 387124 [details]
Patch

Clearing flags on attachment: 387124

Committed r254228: <https://trac.webkit.org/changeset/254228>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.