Merge 135316 - When calling DocumentStyleSheetCollection::addUserSheet, pass in a user sheet

Source/WebCore/dom/DocumentStyleSheetCollection.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 175 matching lines @@
 }
 
 void DocumentStyleSheetCollection::invalidateInjectedStyleSheetCache()
 {
     m_injectedStyleSheetCacheValid = false;
     m_document->styleResolverChanged(DeferRecalcStyle);
 }
 
 void DocumentStyleSheetCollection::addUserSheet(PassRefPtr<StyleSheetContents> userSheet)
 {
+    ASSERT(userSheet->isUserStyleSheet());
     m_userStyleSheets.append(CSSStyleSheet::create(userSheet, m_document));
     m_document->styleResolverChanged(RecalcStyleImmediately);
 }
 
 // This method is called whenever a top-level stylesheet has finished loading.
 void DocumentStyleSheetCollection::removePendingSheet(RemovePendingSheetNotificationType notification)
 {
     // Make sure we knew this sheet was pending, and that our count isn't out of sync.
     ASSERT(m_pendingStylesheets > 0);
 
@@ skipping 288 matching lines @@
     info.addMember(m_injectedAuthorStyleSheets);
     info.addMember(m_userStyleSheets);
     info.addMember(m_activeAuthorStyleSheets);
     info.addMember(m_styleSheetsForStyleSheetList);
     info.addMember(m_styleSheetCandidateNodes);
     info.addMember(m_preferredStylesheetSetName);
     info.addMember(m_selectedStylesheetSetName);
 }
 
 }