If an element A has a parent element, then A's assigned context menu is the assigned context menu o…

Source/core/html/HTMLElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004-2008, 2013, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Motorola Mobility. All rights reserved.
  *
  * 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
@@ skipping 916 matching lines @@
         parsedColor.setRGB(parseColorStringWithCrazyLegacyRules(colorString));
 
     style->setProperty(propertyID, cssValuePool().createColorValue(parsedColor.rgb()));
 }
 
 bool HTMLElement::isInteractiveContent() const
 {
     return false;
 }
 
+HTMLMenuElement* HTMLElement::assignedContextMenu() const
+{
+    if (HTMLMenuElement* menu = contextMenu())
+        return menu;
+
+    return parentElement() && parentElement()->isHTMLElement() ? toHTMLElement(parentElement())->assignedContextMenu() : nullptr;
+}
 
 HTMLMenuElement* HTMLElement::contextMenu() const
 {
     const AtomicString& contextMenuId(fastGetAttribute(contextmenuAttr));
     if (contextMenuId.isNull())
         return nullptr;
 
     Element* element = treeScope().getElementById(contextMenuId);
     // Not checking if the menu element is of type "popup".
     // Ignoring menu element type attribute is intentional according to the standard.
@@ skipping 79 matching lines @@
 #ifndef NDEBUG
 
 // For use in the debugger
 void dumpInnerHTML(blink::HTMLElement*);
 
 void dumpInnerHTML(blink::HTMLElement* element)
 {
     printf("%s\n", element->innerHTML().ascii().data());
 }
 #endif