Fix Self-Referencing OOPIF Infinite Loop

third_party/WebKit/Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
@@ skipping 787 matching lines @@
   const EphemeralRange nextCharacterRange = makeRange(position, next);
   if (nextCharacterRange.isNotNull()) {
     IntRect rect = editor().firstRectForRange(nextCharacterRange);
     if (rect.contains(framePoint))
       return EphemeralRange(nextCharacterRange);
   }
 
   return EphemeralRange();
 }
 
-bool LocalFrame::isURLAllowed(const KURL& url) const {
-  // Exempt about: URLs from self-reference check.
-  if (url.protocolIsAbout())
-    return true;
-
-  // We allow one level of self-reference because some sites depend on that,
-  // but we don't allow more than one.
-  bool foundSelfReference = false;
-  for (const Frame* frame = this; frame; frame = frame->tree().parent()) {
-    if (!frame->isLocalFrame())
-      continue;
-    if (equalIgnoringFragmentIdentifier(toLocalFrame(frame)->document()->url(),
-                                        url)) {
-      if (foundSelfReference)
-        return false;
-      foundSelfReference = true;
-    }
-  }
-  return true;
-}
-
 bool LocalFrame::shouldReuseDefaultView(const KURL& url) const {
   // Secure transitions can only happen when navigating from the initial empty
   // document.
   if (!loader().stateMachine()->isDisplayingInitialEmptyDocument())
     return false;
 
   return document()->isSecureTransitionTo(url);
 }
 
 void LocalFrame::removeSpellingMarkersUnderWords(const Vector<String>& words) {
@@ skipping 99 matching lines @@
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Enter();
 }
 
 ScopedFrameBlamer::~ScopedFrameBlamer() {
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Leave();
 }
 
 }  // namespace blink