The Tor Browser: dom/interfaces/events/nsIDOMBeforeUnloadEvent.idl@129ffea94266

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

     1 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "nsIDOMEvent.idl"

     8 /**

     9  * The nsIDOMBeforeUnloadEvent interface is the interface for events

    10  * sent to handlers of the "beforeunload" event. This event is

    11  * non-standard. Interface derived from Microsoft IE's event

    12  * implementation.

    13  *

    14  * http://msdn.microsoft.com/library/default.asp?url=/workshop/author/dhtml/reference/events.asp

    15  *

    16  */

    18 [scriptable, builtinclass, uuid(ee7b8943-440e-4cc3-b25e-c17c8a821d8b)]

    19 interface nsIDOMBeforeUnloadEvent : nsIDOMEvent

    20 {

    21   /**

    22    * Attribute used to pass back a return value from a beforeunload

    23    * handler

    24    */

    25            attribute DOMString          returnValue;

    26 };

The Tor Browser / file revision

dom/interfaces/events/nsIDOMBeforeUnloadEvent.idl@129ffea94266

dom/interfaces/events/nsIDOMBeforeUnloadEvent.idl