Replace internals.settings.setStorageBlockingPolicy with WebKitTestRunner header in layout tests

[szewai]

0e486e3

Replace internals.settings.setStorageBlockingPolicy with WebKitTestRunner header in layout tests
https://bugs.webkit.org/show_bug.cgi?id=315103
rdar://177440049

Reviewed by Per Arne Vollan.

internals.settings.setStorageBlockingPolicy only updates the storage blocking policy in the current web process. Under
Site Isolation, this means cross-site subframe processes and the network process do not receive the policy update,
leading to inconsistent behavior.

Replace runtime JavaScript calls with declarative <!-- webkit-test-runner [ StorageBlockingPolicy=N ] --> headers, which
set the policy via WebPreferences before the test begins and propagate it to all processes including the network process.

The four dynamic policy change tests (storage-blocking-loosened/strengthened-*) still use the internals API and will be
addressed separately.

* LayoutTests/http/tests/cache/partitioned-cache-iframe.html:
* LayoutTests/http/tests/cache/partitioned-cache.html:
* LayoutTests/http/tests/cache/resources/partitioned-cache-loader.html:
* LayoutTests/http/tests/navigation/page-cache-pending-image-load-cache-partition.html:
* LayoutTests/http/tests/security/credentials-iframes.html:
* LayoutTests/http/tests/security/credentials-main-resource.html:
* LayoutTests/http/tests/security/cross-origin-indexeddb.html:
* LayoutTests/http/tests/security/cross-origin-local-storage-allowed.html:
* LayoutTests/http/tests/security/cross-origin-session-storage-third-party-blocked.html:
* LayoutTests/http/tests/security/cross-origin-websql.html:
* LayoutTests/http/tests/security/cross-origin-worker-indexeddb.html:
* LayoutTests/http/tests/security/resources/document-for-cross-origin-worker-indexeddb.html:
* LayoutTests/http/tests/security/resources/load-local-storage.html:
* LayoutTests/http/tests/security/same-origin-document-domain-storage-allowed.html:
* LayoutTests/http/tests/security/same-origin-storage-blocked.html:
* LayoutTests/http/tests/security/same-origin-websql-blocked.html:
* LayoutTests/http/tests/security/sync-xhr-partition.html:

Canonical link: https://commits.webkit.org/313540@main

6d938b6

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows	Apple Internal
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win	⏳ 🛠 ios-apple
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	🧪 win-tests	⏳ 🛠 mac-apple
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe		🛠 vision-apple
	🧪 ios-wk2-wpt	🧪 api-mac-debug	✅ 🛠 gtk3-libwebrtc
	✅ 🧪 api-ios	✅ 🧪 mac-wk1	✅ 🛠 gtk
		✅ 🧪 mac-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 vision	🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
✅ 🛠 🧪 merge	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🛠 playstation
	✅ 🧪 vision-wk2	✅ 🧪 mac-intel-wk2
	✅ 🛠 tv
	✅ 🛠 tv-sim	✅ 🧪 mac-site-isolation
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on previous version of this PR (hash 2166499)

Details

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows	Apple Internal
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win	✅ 🛠 ios-apple
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	❌ 🧪 wpe-wk2	❌ 🧪 win-tests	✅ 🛠 mac-apple
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe		✅ 🛠 vision-apple
	✅ 🧪 ios-wk2-wpt	✅ 🧪 api-mac-debug	✅ 🛠 gtk3-libwebrtc
	✅ 🧪 api-ios	✅ 🧪 mac-wk1	✅ 🛠 gtk
		❌ 🧪 mac-wk2	❌ 🧪 gtk-wk2
	✅ 🛠 vision	❌ 🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
	✅ 🛠 vision-sim	❌ 🧪 mac-wk2-stress	✅ 🛠 playstation
	✅ 🧪 vision-wk2	❌ 🧪 mac-intel-wk2
	✅ 🛠 tv
	✅ 🛠 tv-sim	✅ 🧪 mac-site-isolation
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash 6d938b6)

Details

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows	Apple Internal
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win	⏳ 🛠 ios-apple
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	🧪 win-tests	⏳ 🛠 mac-apple
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe		🛠 vision-apple
	🧪 ios-wk2-wpt	🧪 api-mac-debug	✅ 🛠 gtk3-libwebrtc
	✅ 🧪 api-ios	✅ 🧪 mac-wk1	✅ 🛠 gtk
		✅ 🧪 mac-wk2	✅ 🧪 gtk-wk2
	✅ 🛠 vision	🧪 mac-AS-debug-wk2	✅ 🧪 api-gtk
✅ 🛠 🧪 merge	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🛠 playstation
	✅ 🧪 vision-wk2	✅ 🧪 mac-intel-wk2
	✅ 🛠 tv
	✅ 🛠 tv-sim	✅ 🧪 mac-site-isolation
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-commit-queue]

Committed 313540@main (0e486e3): https://commits.webkit.org/313540@main

Reviewed commits have been landed. Closing PR #65192 and removing active labels.