Switch cookie accept policy when using managed domains

https://bugs.webkit.org/show_bug.cgi?id=262415
<rdar://116025019>

Reviewed by Pascoe.

The ITP features block third party cookie access, and purge local state regularly.
When an MDM application is running with managed domains, we should adjust cookie
acceptance policy to support those managed origins.

* Source/WebKit/NetworkProcess/NetworkProcess.cpp:
(WebKit::NetworkProcess::setManagedDomainsForResourceLoadStatistics):

Canonical link: https://commits.webkit.org/268871@main

Source/WebKit/NetworkProcess/NetworkProcess.cpp

@@ -1327,13 +1327,19 @@ void NetworkProcess::setAppBoundDomainsForResourceLoadStatistics(PAL::SessionID
 #endif
 
 #if ENABLE(MANAGED_DOMAINS)
-void NetworkProcess::setManagedDomainsForResourceLoadStatistics(PAL::SessionID sessionID, HashSet<WebCore::RegistrableDomain>&& appBoundDomains, CompletionHandler<void()>&& completionHandler)
+void NetworkProcess::setManagedDomainsForResourceLoadStatistics(PAL::SessionID sessionID, HashSet<WebCore::RegistrableDomain>&& managedDomains, CompletionHandler<void()>&& completionHandler)
 {
     if (auto* session = networkSession(sessionID)) {
-        if (auto* resourceLoadStatistics = session->resourceLoadStatistics()) {
-            resourceLoadStatistics->setManagedDomains(WTFMove(appBoundDomains), WTFMove(completionHandler));
-            return;
-        }
+        supplement<WebCookieManager>()->setHTTPCookieAcceptPolicy(sessionID, WebCore::HTTPCookieAcceptPolicy::AlwaysAccept, [session = WeakPtr { *session }, managedDomains = WTFMove(managedDomains), completionHandler = WTFMove(completionHandler)]() mutable {
+            if (session) {
+                if (auto* resourceLoadStatistics = session->resourceLoadStatistics()) {
+                    resourceLoadStatistics->setManagedDomains(WTFMove(managedDomains), WTFMove(completionHandler));
+                    return;
+                }
+            }
+            completionHandler();
+        });
+        return;
     }
     ASSERT_NOT_REACHED();
     completionHandler();