Remove almost all of Oilpan

sky/engine/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 676 matching lines @@
 
     bool dirtyElementsForLayerUpdate();
     void updateDistributionIfNeeded();
     void evaluateMediaQueryListIfNeeded();
 
     void updateRenderTree(StyleRecalcChange);
     void updateStyle(StyleRecalcChange);
 
     void detachParser();
 
-    void clearWeakMembers(Visitor*);
-
     virtual bool isDocument() const override final { return true; }
 
     virtual void childrenChanged(const ChildrenChange&) override;
 
     virtual String nodeName() const override final;
     virtual NodeType nodeType() const override final;
     virtual bool childTypeAllowed(NodeType) const override final;
     virtual PassRefPtr<Node> cloneNode(bool deep = true) override final;
 
 #if !ENABLE(OILPAN)
@@ skipping 200 matching lines @@
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h