Removal of alert()/confirm() in third-party iframes breaks Salesforce.
<rdar://82591122>
Created attachment 436947 [details] Patch
Created attachment 436969 [details] Patch
ChangeLog entry in Source/WebCore/ChangeLog contains OOPS!.
Committed r281848 (241180@main): <https://commits.webkit.org/241180@main>
*** Bug 231272 has been marked as a duplicate of this bug. ***
*** Bug 231944 has been marked as a duplicate of this bug. ***