[HTML Imports] Implement sub-imports processing.

Source/core/dom/Document.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 1009 matching lines @@
 
     TextAutosizer* textAutosizer() { return m_textAutosizer.get(); }
 
     PassRefPtr<Element> createElement(const AtomicString& localName, const AtomicString& typeExtension, ExceptionCode&);
     PassRefPtr<Element> createElementNS(const AtomicString& namespaceURI, const String& qualifiedName, const AtomicString& typeExtension, ExceptionCode&);
     ScriptValue registerElement(WebCore::ScriptState*, const AtomicString& name, ExceptionCode&);
     ScriptValue registerElement(WebCore::ScriptState*, const AtomicString& name, const Dictionary& options, ExceptionCode&);
     CustomElementRegistry* registry() const { return m_registry.get(); }
     CustomElementRegistry* ensureCustomElementRegistry();
 
-    HTMLImportsController* ensureImports();
+    void setImports(PassRefPtr<HTMLImportsController>);
     HTMLImportsController* imports() const { return m_imports.get(); }
     bool haveImportsLoaded() const;
     void didLoadAllImports();
 
     void adjustFloatQuadsForScrollAndAbsoluteZoom(Vector<FloatQuad>&, RenderObject*);
     void adjustFloatRectForScrollAndAbsoluteZoom(FloatRect&, RenderObject*);
 
     bool hasActiveParser();
     unsigned activeParserCount() { return m_activeParserCount; }
     void incrementActiveParserCount() { ++m_activeParserCount; }
@@ skipping 323 matching lines @@
     RefPtr<ScriptedAnimationController> m_scriptedAnimationController;
 
     Timer<Document> m_pendingTasksTimer;
     Vector<OwnPtr<Task> > m_pendingTasks;
 
     OwnPtr<Prerenderer> m_prerenderer;
 
     OwnPtr<TextAutosizer> m_textAutosizer;
 
     RefPtr<CustomElementRegistry> m_registry;
-    OwnPtr<HTMLImportsController> m_imports;
+    RefPtr<HTMLImportsController> m_imports;
 
     bool m_scheduledTasksAreSuspended;
     
     RefPtr<NamedFlowCollection> m_namedFlows;
 
     RefPtr<DOMSecurityPolicy> m_domSecurityPolicy;
 
     void sharedObjectPoolClearTimerFired(Timer<Document>*);
     Timer<Document> m_sharedObjectPoolClearTimer;
 
@@ skipping 64 matching lines @@
 inline bool Node::isDocumentNode() const
 {
     return this == documentInternal();
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h