Bug 314025 – [Site Isolation] http/tests/contentextensions/block-everything-unless-domain.html is flaky on macOS post-commit bots

• Status: RESOLVED
• Resolution: FIXED
• Component: New Bugs

[Anthony Tarbinian]

https://commits.webkit.org/311882@main fixed http/tests/contentextensions/block-everything-unless-domain.html
with site isolation enabled.

The test is not constantly failing, but is now flaky on macOS release site-isolation post-commit bots
with the following diff:

```
--- /Volumes/Data/worker/Apple-Tahoe-Release-WK2-Site-Isolation-Tree-Tests/build/layout-test-results/http/tests/contentextensions/block-everything-unless-domain-expected.txt
+++ /Volumes/Data/worker/Apple-Tahoe-Release-WK2-Site-Isolation-Tree-Tests/build/layout-test-results/http/tests/contentextensions/block-everything-unless-domain-actual.txt
@@ -1,4 +1,3 @@
 CONSOLE MESSAGE: helper loaded
-CONSOLE MESSAGE: Content blocker prevented frame displaying http://localhost:8000/contentextensions/resources/should-not-load.html from loading a resource from http://localhost:8000/contentextensions/resources/should-not-load.html
 CONSOLE MESSAGE: PASS - blocked the load
 ```


https://results.webkit.org/?suite=layout-tests&test=http%2Ftests%2Fcontentextensions%2Fblock-everything-unless-domain.html&flavor=site-isolation

[Radar WebKit Bug Importer]

<rdar://problem/176216963>

[Anthony Tarbinian]

Pull request: https://github.com/WebKit/WebKit/pull/64215

[EWS]

Committed 312807@main (95ea1fff522f): <https://commits.webkit.org/312807@main>

Reviewed commits have been landed. Closing PR #64215 and removing active labels.