Remove WebFrame::canHaveSecureChild

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 3337 matching lines @@
     //
     // In all cases, a frame must be potentially trustworthy in addition to
     // having an exception listed in order for the exception to be granted.
     if (!getSecurityOrigin()->isPotentiallyTrustworthy())
         return false;
 
     if (SchemeRegistry::schemeShouldBypassSecureContextCheck(getSecurityOrigin()->protocol()))
         return true;
 
     if (privilegeContextCheck == StandardSecureContextCheck) {
-        Frame* parent = m_frame ? m_frame->tree().parent() : nullptr;
-        if (parent && !parent->canHaveSecureChild())
-            return false;
+        if (!m_frame)
+            return true;
+        Frame* parent = m_frame->tree().parent();
+        while (parent) {
+            if (!parent->securityContext()->getSecurityOrigin()->isPotentiallyTrustworthy())
+                return false;
+            parent = parent->tree().parent();
+        }
     }
     return true;
 }
 
 StyleSheetList& Document::styleSheets()
 {
     if (!m_styleSheetList)
         m_styleSheetList = StyleSheetList::create(this);
     return *m_styleSheetList;
 }
@@ skipping 2647 matching lines @@
 }
 
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().getString().utf8().data());
 }
 #endif