Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: b4c4069eb5b7eebcbcaaed64e00f6ce8ce08c5f0
https://github.com/WebKit/WebKit/commit/b4c4069eb5b7eebcbcaaed64e00f6ce8ce08c5f0
Author: Anne van Kesteren <[email protected]>
Date: 2026-06-02 (Tue, 02 Jun 2026)
Changed paths:
M LayoutTests/TestExpectations
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-bad-subdomain.sub.https-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-port.sub.https-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-same.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain-with-redirect.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-no-child-yeswithparams-subdomain.sub.https-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-port.sub.https-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-same.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-no-subdomain.sub.https-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-same.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/1-iframe/parent-yes-child-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain-child2-yes-subdomainport.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-no-subdomain1-child2-yes-subdomain2.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-no-child1-yes-subdomain-child2-no-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-no-subdomain2.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomain2.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-no-subdomain-child2-yes-subdomainport.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-no-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomain2.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/2-iframes/parent-yes-child1-yes-subdomain-child2-yes-subdomainport.sub.https-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/META.yml
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/about-blank.https.sub.html
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/document-domain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/cross-origin-isolated.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-no.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/csp-sandbox-yes.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-no.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-to-javascript-yes.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-no.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/data-url-yes.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-no.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/javascript-url-yes.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/removed-iframe.sub.https-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/resources/data-to-javascript-test.mjs
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-no.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-iframe-yes.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-no.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/sandboxed-same-origin-iframe-yes.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/two-sandboxed-iframes.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/getter-special-cases/two-sandboxed-iframes.https.html
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/going-back.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-same-2-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-no-subdomain-2-yes-subdomain2.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-subdomain-yes-2-subdomain2-no.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-no-1-yes-subdomain-2-no-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/iframe-navigation/parent-yes-1-no-same-2-no-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/insecure-http.sub-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-same.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-no-openee-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-same.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-no-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-port.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-same.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/popups/opener-yes-openee-yes-subdomain.sub.https-expected.txt
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/regression-1399759.https.sub.html
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LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/regression-1399759.https.sub_pipe=header(Origin-Agent-Cluster,_3F0)-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/regression-1399759.https.sub_pipe=header(Origin-Agent-Cluster,_3F1)-expected.txt
A
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/removing-iframes.sub.https-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/html/browsers/origin/origin-keyed-agent-clusters/w3c-import.log
M
LayoutTests/imported/w3c/web-platform-tests/html/dom/idlharness.https_include=(Document_Window)-expected.txt
M
LayoutTests/imported/w3c/web-platform-tests/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/window-domain-failure.https.sub-expected.txt
M Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml
M Source/WebCore/Headers.cmake
M Source/WebCore/Sources.txt
M Source/WebCore/WebCore.xcodeproj/project.pbxproj
M Source/WebCore/bindings/js/WebCoreBuiltinNames.h
M Source/WebCore/dom/Document.cpp
M Source/WebCore/dom/Document.h
A Source/WebCore/dom/OriginKeyed.h
M Source/WebCore/loader/DocumentLoader.h
M Source/WebCore/loader/FrameLoader.cpp
A Source/WebCore/loader/OriginAgentClusterPolicy.cpp
A Source/WebCore/loader/OriginAgentClusterPolicy.h
M Source/WebCore/page/DOMWindow.cpp
M Source/WebCore/page/DOMWindow.h
M Source/WebCore/page/DOMWindow.idl
M Source/WebCore/page/LocalDOMWindow.cpp
M Source/WebCore/page/LocalDOMWindow.h
M Source/WebCore/platform/network/HTTPHeaderNames.in
M Source/WebKit/Shared/PolicyDecision.h
M Source/WebKit/Shared/PolicyDecision.serialization.in
M Source/WebKit/UIProcess/BrowsingContextGroup.cpp
M Source/WebKit/UIProcess/BrowsingContextGroup.h
M Source/WebKit/UIProcess/WebPageProxy.cpp
M Source/WebKit/UIProcess/WebPageProxyTesting.cpp
M Source/WebKit/WebProcess/WebPage/WebFrame.cpp
Log Message:
-----------
Implement the Origin-Agent-Cluster header
https://bugs.webkit.org/show_bug.cgi?id=216618
rdar://69452369
Reviewed by Alex Christensen.
This implements origin-keyed agent clusters and gates it behind
OriginAgentClusterEnabled (set to preview). It is standardized here:
https://html.spec.whatwg.org/multipage/browsers.html#origin-isolation
This new keying does not impact process allocation, although we could
decide to make it impact that in the future if we wanted to. It impacts
document.domain, serialization and deserialization of certain objects,
and the new window.originAgentCluster getter.
We add a new test that is upstreamed at
https://github.com/web-platform-tests/wpt/pull/60311 that catches an
issue with our existing agent cluster implementation for opaque
origins and we also fix that issue.
As the test infrastructure continues to use the same browsing context
group for each test, we add a way to reset the browsing context group
state so it appears as if you are getting a fresh browsing context
group when you start a new test.
The subtest failures of regression-1399759.https.sub.html are due to
about:blank inheriting from the parent instead of the initiator of the
navigation. That's a distinct issue from this new feature.
going-back.sub.https.html is skipped because it times out on some bots
at the history.back() step, while the feature-related assertions pass.
I suspect it's related to the bfcache. I could not reproduce it locally
(1000 iterations of the test as well as 10 full-directory runs).
Canonical link: https://commits.webkit.org/314346@main
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