Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/dom/NodeIteratorBase.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 16 matching lines @@
 
 #include "platform/heap/Handle.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class ExceptionState;
 class Node;
 class NodeFilter;
 
-class NodeIteratorBase : public WillBeGarbageCollectedMixin {
-    DECLARE_EMPTY_VIRTUAL_DESTRUCTOR_WILL_BE_REMOVED(NodeIteratorBase);
+class NodeIteratorBase : public GarbageCollectedMixin {
 public:
     Node* root() const { return m_root.get(); }
     unsigned whatToShow() const { return m_whatToShow; }
     NodeFilter* filter() const { return m_filter.get(); }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
-    NodeIteratorBase(PassRefPtrWillBeRawPtr<Node>, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter>);
+    NodeIteratorBase(RawPtr<Node>, unsigned whatToShow, RawPtr<NodeFilter>);
     unsigned acceptNode(Node*, ExceptionState&) const;
 
 private:
-    RefPtrWillBeMember<Node> m_root;
+    Member<Node> m_root;
     unsigned m_whatToShow;
-    RefPtrWillBeMember<NodeFilter> m_filter;
+    Member<NodeFilter> m_filter;
 };
 
 } // namespace blink
 
 #endif // NodeIteratorBase_h