Make custom elements work in HTML imports

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 744 matching lines @@
     return m_importsController->loaderFor(*this);
 }
 
 bool Document::haveImportsLoaded() const
 {
     if (!m_importsController)
         return true;
     return !m_importsController->shouldBlockScriptExecution(*this);
 }
 
-LocalDOMWindow* Document::executingWindow()
+LocalDOMWindow* Document::executingWindow() const
 {
     if (LocalDOMWindow* owningWindow = domWindow())
         return owningWindow;
     if (HTMLImportsController* import = this->importsController())
         return import->master()->domWindow();
     return 0;
 }
 
 LocalFrame* Document::executingFrame()
 {
@@ skipping 5264 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