Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: fad98f457b71db4145defe3478d0fdd719ff6300
      
https://github.com/WebKit/WebKit/commit/fad98f457b71db4145defe3478d0fdd719ff6300
  Author: Matthew Finkel <[email protected]>
  Date:   2025-05-19 (Mon, 19 May 2025)

  Changed paths:
    M LayoutTests/http/tests/cookies/resources/setCookies.cgi
    A 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie-expected.txt
    A 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie-preexisting-cookie-expected.txt
    A 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie-preexisting-cookie.html
    A 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie.html
    A 
LayoutTests/http/tests/resourceLoadStatistics/only-partitioned-cookies-after-redirect-expected.txt
    A 
LayoutTests/http/tests/resourceLoadStatistics/only-partitioned-cookies-after-redirect.html
    A 
LayoutTests/http/tests/websocket/tests/hybi/websocket-allowed-setting-cookie-as-third-party-with-third-party-cookie-blocking.https-expected.txt
    A 
LayoutTests/http/tests/websocket/tests/hybi/websocket-allowed-setting-cookie-as-third-party-with-third-party-cookie-blocking.https.html
    A 
LayoutTests/http/tests/workers/service/basic-install-event-sw-fetch-third-party-expected.txt
    A 
LayoutTests/http/tests/workers/service/basic-install-event-sw-fetch-third-party.html
    A 
LayoutTests/http/tests/workers/service/resources/basic-install-event-waitUntil-resolve-worker-then-fetch.js
    M Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml
    M Tools/TestWebKitAPI/Tests/WebKitCocoa/ResourceLoadStatistics.mm

  Log Message:
  -----------
  [cocoa] Disable CHIPS
https://bugs.webkit.org/show_bug.cgi?id=292371
rdar://149535707

Reviewed by Wenson Hsieh and Alex Christensen.

Before 288413@main, Apple platforms blocked all third-party cookies by default.
In that commit, we enabled CHIPS (opt-in partitioned cookies), and that
required allowing partitioned third-party cookies while rejecting unpartitioned
cookies. The mechanism for rejecting unpartitioned third-party cookies is 
incomplete,
so this change disables CHIPS and returns to the previous shipping behavior.

We may land a different fix later or fix this in an underlying framework.

Adding some new tests that cover setting cross-site cookies in various
situations.

* LayoutTests/http/tests/cookies/resources/setCookies.cgi:
* 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie-expected.txt:
 Added.
* 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie-preexisting-cookie-expected.txt:
 Added.
* 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie-preexisting-cookie.html:
 Added.
* 
LayoutTests/http/tests/navigation/ping-attribute/cross-site-url-anchor-cookie.html:
 Added.
* 
LayoutTests/http/tests/resourceLoadStatistics/only-partitioned-cookies-after-redirect-expected.txt:
 Added.
* 
LayoutTests/http/tests/resourceLoadStatistics/only-partitioned-cookies-after-redirect.html:
 Added.
* 
LayoutTests/http/tests/websocket/tests/hybi/websocket-allowed-setting-cookie-as-third-party-with-third-party-cookie-blocking.https-expected.txt:
 Added.
* 
LayoutTests/http/tests/websocket/tests/hybi/websocket-allowed-setting-cookie-as-third-party-with-third-party-cookie-blocking.https.html:
 Added.
* 
LayoutTests/http/tests/workers/service/basic-install-event-sw-fetch-third-party-expected.txt:
 Added.
* 
LayoutTests/http/tests/workers/service/basic-install-event-sw-fetch-third-party.html:
 Added.
* 
LayoutTests/http/tests/workers/service/resources/basic-install-event-waitUntil-resolve-worker-then-fetch.js:
 Added.
(event.event.waitUntil.new.Promise):
(event.then.r.r.text.then):
* Source/WTF/Scripts/Preferences/UnifiedWebPreferences.yaml:
* Tools/TestWebKitAPI/Tests/WebKitCocoa/ResourceLoadStatistics.mm:
(TEST(ResourceLoadStatistics, BlockUnpartitionedThirdPartyCookies)):
(TEST(ResourceLoadStatistics, 
BlockUnpartitionedAndAllowPartitionedThirdPartyCookies)):

(cherry picked from commit d34e63ea0dd698ef0d3a3d779fbdfae02526126c)

Originally-landed-as: 8c26876e5fb1. rdar://151480153
Canonical link: https://commits.webkit.org/295121@main



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