Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/html/HTMLDetailsElement.h

 /*
  * Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 13 matching lines @@
 #include "core/html/HTMLElement.h"
 
 namespace blink {
 
 template<typename T> class EventSender;
 using DetailsEventSender = EventSender<HTMLDetailsElement>;
 
 class HTMLDetailsElement final : public HTMLElement {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtrWillBeRawPtr<HTMLDetailsElement> create(Document&);
+    static RawPtr<HTMLDetailsElement> create(Document&);
     void toggleOpen();
     ~HTMLDetailsElement() override;
 
     void dispatchPendingEvent(DetailsEventSender*);
 
     Element* findMainSummary() const;
 
 private:
     explicit HTMLDetailsElement(Document&);
 
     LayoutObject* createLayoutObject(const ComputedStyle&) override;
     void parseAttribute(const QualifiedName&, const AtomicString&, const AtomicString&) override;
     void didAddUserAgentShadowRoot(ShadowRoot&) override;
     bool isInteractiveContent() const override;
 
     bool m_isOpen;
 };
 
 } // namespace blink
 
 #endif // HTMLDetailsElement_h