Don't call isURLAllowed() from layout.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Simon Hausmann (hausmann@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Ericsson AB. 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
@@ skipping 128 matching lines @@
       frameOwnerPropertiesChanged();
   } else {
     if (name == srcAttr)
       logUpdateAttributeIfIsolatedWorldAndInDocument("iframe", srcAttr,
                                                      oldValue, value);
     HTMLFrameElementBase::parseAttribute(name, oldValue, value);
   }
 }
 
 bool HTMLIFrameElement::layoutObjectIsNeeded(const ComputedStyle& style) {
-  return isURLAllowed() && HTMLElement::layoutObjectIsNeeded(style);
+  return contentFrame() && HTMLElement::layoutObjectIsNeeded(style);
 }
 
 LayoutObject* HTMLIFrameElement::createLayoutObject(const ComputedStyle&) {
   return new LayoutIFrame(this);
 }
 
 Node::InsertionNotificationRequest HTMLIFrameElement::insertedInto(
     ContainerNode* insertionPoint) {
   InsertionNotificationRequest result =
       HTMLFrameElementBase::insertedInto(insertionPoint);
@@ skipping 47 matching lines @@
 bool HTMLIFrameElement::initializePermissionsAttribute() {
   if (!RuntimeEnabledFeatures::permissionDelegationEnabled())
     return false;
 
   if (!m_permissions)
     m_permissions = HTMLIFrameElementPermissions::create(this);
   return true;
 }
 
 }  // namespace blink