Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/svg/SVGURIReference.h

 /*
  * Copyright (C) 2004, 2005, 2008, 2009 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 12 matching lines @@
 
 #include "core/CoreExport.h"
 #include "core/dom/Document.h"
 #include "core/svg/SVGAnimatedHref.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Element;
 
-class CORE_EXPORT SVGURIReference : public WillBeGarbageCollectedMixin {
+class CORE_EXPORT SVGURIReference : public GarbageCollectedMixin {
 public:
     virtual ~SVGURIReference() { }
 
     bool isKnownAttribute(const QualifiedName&);
 
     // Use this for accesses to 'href' or 'xlink:href' (in that order) for
     // elements where both are allowed and don't necessarily inherit from
     // SVGURIReference.
     static const AtomicString& legacyHrefString(const SVGElement&);
 
@@ skipping 20 matching lines @@
 
     // JS API
     SVGAnimatedHref* href() const { return m_href.get(); }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     explicit SVGURIReference(SVGElement*);
 
 private:
-    RefPtrWillBeMember<SVGAnimatedHref> m_href;
+    Member<SVGAnimatedHref> m_href;
 };
 
 } // namespace blink
 
 #endif // SVGURIReference_h