[import] support document.stylesheets in imported documents.

Source/core/dom/StyleSheetCollection.h

 /*
  * 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, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 12 matching lines @@
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef StyleSheetCollection_h
 #define StyleSheetCollection_h
 
 #include "core/dom/Document.h"
 #include "core/dom/DocumentOrderedList.h"
+#include "core/dom/DocumentStyleSheetCollector.h"
 #include "core/dom/StyleSheetScopingNodeList.h"
 #include "core/dom/TreeScope.h"
 #include "wtf/FastAllocBase.h"
 #include "wtf/HashMap.h"
 #include "wtf/ListHashSet.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
@@ skipping 15 matching lines @@
 public:
     StyleSheetCollectionBase();
     ~StyleSheetCollectionBase();
 
     Vector<RefPtr<CSSStyleSheet> >& activeAuthorStyleSheets() { return m_activeAuthorStyleSheets; }
     Vector<RefPtr<StyleSheet> >& styleSheetsForStyleSheetList() { return m_styleSheetsForStyleSheetList; }
     const Vector<RefPtr<CSSStyleSheet> >& activeAuthorStyleSheets() const { return m_activeAuthorStyleSheets; }
     const Vector<RefPtr<StyleSheet> >& styleSheetsForStyleSheetList() const { return m_styleSheetsForStyleSheetList; }
 
     void swap(StyleSheetCollectionBase&);
+    void swapSheetsForSheetList(Vector<RefPtr<StyleSheet> >&);
     void appendActiveStyleSheets(const Vector<RefPtr<CSSStyleSheet> >&);
     void appendActiveStyleSheet(CSSStyleSheet*);
     void appendSheetForList(StyleSheet*);
 
+    DocumentStyleSheetCollector collector();
+
 protected:
     Vector<RefPtr<StyleSheet> > m_styleSheetsForStyleSheetList;
     Vector<RefPtr<CSSStyleSheet> > m_activeAuthorStyleSheets;
 };
 
 
 class StyleSheetCollection : public StyleSheetCollectionBase {
 public:
     void addStyleSheetCandidateNode(Node*, bool createdByParser);
     void removeStyleSheetCandidateNode(Node*, ContainerNode* scopingNode);
@@ skipping 44 matching lines @@
     bool m_usesRemUnits;
 
     DocumentOrderedList m_styleSheetCandidateNodes;
     StyleSheetScopingNodeList m_scopingNodesForStyleScoped;
 };
 
 }
 
 #endif