Oilpan: Remove most WillBe types from the code base

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2010 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 15 matching lines @@
 
 #include "core/html/HTMLFormControlElementWithState.h"
 
 namespace blink {
 
 class HTMLSelectElement;
 
 class HTMLKeygenElement final : public HTMLFormControlElementWithState {
     DEFINE_WRAPPERTYPEINFO();
 public:
-    static PassRefPtrWillBeRawPtr<HTMLKeygenElement> create(Document&, HTMLFormElement*);
+    static RawPtr<HTMLKeygenElement> create(Document&, HTMLFormElement*);
 
     bool willValidate() const override { return false; }
 
     LayoutObject* createLayoutObject(const ComputedStyle&) override;
 
 private:
     HTMLKeygenElement(Document&, HTMLFormElement*);
 
     bool areAuthorShadowsAllowed() const override { return false; }
 
@@ skipping 14 matching lines @@
     bool shouldSaveAndRestoreFormControlState() const override { return false; }
 
     void didAddUserAgentShadowRoot(ShadowRoot&) override;
 
     HTMLSelectElement* shadowSelect() const;
 };
 
 } // namespace blink
 
 #endif // HTMLKeygenElement_h