Add an iframe permissions= attribute for implementing permission delegation

third_party/WebKit/Source/core/html/HTMLFrameOwnerElement.cpp

 /*
  * Copyright (C) 2006, 2007, 2009 Apple Inc. 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 197 matching lines @@
 bool HTMLFrameOwnerElement::isKeyboardFocusable() const
 {
     return m_contentFrame && HTMLElement::isKeyboardFocusable();
 }
 
 void HTMLFrameOwnerElement::dispatchLoad()
 {
     dispatchScopedEvent(Event::create(EventTypeNames::load));
 }
 
+const WebVector<WebPermissionType>& HTMLFrameOwnerElement::delegatedPermissions() const
+{
+    DEFINE_STATIC_LOCAL(WebVector<WebPermissionType>, permissions, ());
+    return permissions;
+}
+
 Document* HTMLFrameOwnerElement::getSVGDocument(ExceptionState& exceptionState) const
 {
     Document* doc = contentDocument();
     if (doc && doc->isSVGDocument())
         return doc;
     return nullptr;
 }
 
 void HTMLFrameOwnerElement::setWidget(Widget* widget)
 {
@@ skipping 75 matching lines @@
 DEFINE_TRACE(HTMLFrameOwnerElement)
 {
     visitor->trace(m_contentFrame);
     visitor->trace(m_widget);
     HTMLElement::trace(visitor);
     FrameOwner::trace(visitor);
 }
 
 
 } // namespace blink