Cherry-pick a4b39a8. rdar://125363034

    REGRESSION(276505@main) reloading after crashing registers RegistrableDomain as a public suffix
    https://bugs.webkit.org/show_bug.cgi?id=271662
    rdar://125363034

    Reviewed by Sihui Liu.

    topPrivatelyControlledDomain was actually unused, but what we should be sending as a public suffix
    should actually be a public suffix.

    * Source/WebKit/UIProcess/WebPageProxy.cpp:
    (WebKit::WebPageProxy::launchProcessForReload):

    Canonical link: https://commits.webkit.org/276635@main

Identifier: 276609.4@safari-7619.1.7-branch

Source/WebKit/UIProcess/WebPageProxy.cpp

@@ -1427,10 +1427,10 @@ RefPtr<API::Navigation> WebPageProxy::launchProcessForReload()
         internals().pageLoadState.setPendingAPIRequest(transaction, { navigation->navigationID(), url });
     }
 
-    auto topPrivatelyControlledDomain = WebCore::PublicSuffixStore::singleton().topPrivatelyControlledDomain(URL(m_backForwardList->currentItem()->url()).host().toString());
+    auto publicSuffix = WebCore::PublicSuffixStore::singleton().publicSuffix(URL(m_backForwardList->currentItem()->url()).host().toString());
 
     // We allow stale content when reloading a WebProcess that's been killed or crashed.
-    send(Messages::WebPage::GoToBackForwardItem({ navigation->navigationID(), m_backForwardList->currentItem()->itemID(), FrameLoadType::IndexedBackForward, ShouldTreatAsContinuingLoad::No, std::nullopt, m_lastNavigationWasAppInitiated, std::nullopt, topPrivatelyControlledDomain, { } }));
+    send(Messages::WebPage::GoToBackForwardItem({ navigation->navigationID(), m_backForwardList->currentItem()->itemID(), FrameLoadType::IndexedBackForward, ShouldTreatAsContinuingLoad::No, std::nullopt, m_lastNavigationWasAppInitiated, std::nullopt, publicSuffix, { } }));
     m_process->startResponsivenessTimer();
 
     if (shouldForceForegroundPriorityForClientNavigation())