Require the entry document to have the same origin as the open()d document

third_party/WebKit/Source/core/dom/Document.idl

 /*
  * Copyright (C) 2006, 2007, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006, 2007 Samuel Weinig <sam@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 95 matching lines @@
     [SameObject] readonly attribute HTMLCollection links;
     [SameObject] readonly attribute HTMLCollection forms;
     [SameObject] readonly attribute HTMLCollection scripts;
     [PerWorldBindings] NodeList getElementsByName(DOMString elementName);
     readonly attribute HTMLScriptElement? currentScript;
 
     // dynamic markup insertion
     // FIXME: There are two open() methods in the spec.
     [Custom, CustomElementCallbacks, RaisesException] void open();
     [RaisesException] void close();
-    [CallWith=ActiveWindow, CustomElementCallbacks, RaisesException] void write(DOMString... text);
-    [CallWith=ActiveWindow, CustomElementCallbacks, RaisesException] void writeln(DOMString... text);
+    [CallWith=FirstWindow, CustomElementCallbacks, RaisesException] void write(DOMString... text);

[jochen (gone - plz use gerrit), 2016/01/29 08:01:37]

write() uses the window to call open() internally, so I had to update it here as
well

[philipj_slow, 2016/01/29 08:39:18]

FirstWindow isn't documented in https://www.chromium.org/blink/webidl, is a
Window that holds the responsible document of the entry settings object?

[jochen (gone - plz use gerrit), 2016/01/29 09:40:24]

done.

I didn't document ActiveWindow, as I'll delete this soon.

+    [CallWith=FirstWindow, CustomElementCallbacks, RaisesException] void writeln(DOMString... text);
 
     // user interaction
     [ImplementedAs=domWindow] readonly attribute Window? defaultView;
     readonly attribute Element? activeElement;
     boolean hasFocus();
     [CustomElementCallbacks, MeasureAs=DocumentDesignMode] attribute DOMString designMode;
     [CustomElementCallbacks, RaisesException] boolean execCommand(DOMString commandId, optional boolean showUI = false, optional DOMString value = "");
     [RaisesException] boolean queryCommandEnabled(DOMString commandId);
     [RaisesException] boolean queryCommandIndeterm(DOMString commandId);
     [RaisesException] boolean queryCommandState(DOMString commandId);
@@ skipping 86 matching lines @@
     attribute EventHandler onsearch;
     [RuntimeEnabled=ExperimentalContentSecurityPolicyFeatures] attribute EventHandler onsecuritypolicyviolation;
     attribute EventHandler onselectionchange;
     attribute EventHandler onselectstart;
     attribute EventHandler onwheel;
 };
 
 Document implements GlobalEventHandlers;
 Document implements ParentNode;
 Document implements NonElementParentNode;