Removing redundant DCHECK

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 4585 matching lines @@
             return;
         if (isHTMLScriptElement(script))
             scriptElement.setHTMLScriptElement(toHTMLScriptElement(script));
         else if (isSVGScriptElement(script))
             scriptElement.setSVGScriptElement(toSVGScriptElement(script));
     }
 }
 
 void Document::pushCurrentScript(Element* newCurrentScript)
 {
-    DCHECK(newCurrentScript);
     DCHECK(isHTMLScriptElement(newCurrentScript) || isSVGScriptElement(newCurrentScript));
     m_currentScriptStack.append(newCurrentScript);
 }
 
 void Document::popCurrentScript()
 {
     DCHECK(!m_currentScriptStack.isEmpty());
     m_currentScriptStack.removeLast();
 }
 
@@ skipping 1369 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     Document::WeakDocumentSet& set = Document::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