Oilpan: Prepare to move form control ua shadow elements to Oilpan heap.

Source/core/html/shadow/PasswordGeneratorButtonElement.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 24 matching lines @@
 #include "core/html/HTMLDivElement.h"
 
 namespace WebCore {
 
 class ImageResource;
 class HTMLInputElement;
 class ShadowRoot;
 
 class PasswordGeneratorButtonElement FINAL : public HTMLDivElement {
 public:
-    static PassRefPtr<PasswordGeneratorButtonElement> create(Document&);
+    static PassRefPtrWillBeRawPtr<PasswordGeneratorButtonElement> create(Document&);
 
     void decorate(HTMLInputElement*);
 
     virtual bool willRespondToMouseMoveEvents() OVERRIDE;
     virtual bool willRespondToMouseClickEvents() OVERRIDE;
 
 private:
     PasswordGeneratorButtonElement(Document&);
     virtual bool isPasswordGeneratorButtonElement() const OVERRIDE { return true; }
     virtual PassRefPtr<RenderStyle> customStyleForRenderer() OVERRIDE;
     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     virtual bool isMouseFocusable() const OVERRIDE { return false; }
     virtual void defaultEventHandler(Event*) OVERRIDE;
 
     ImageResource* imageForNormalState();
     ImageResource* imageForHoverState();
 
     HTMLInputElement* hostInput();
     void updateImage();
 
     ResourcePtr<ImageResource> m_cachedImageForNormalState;
     ResourcePtr<ImageResource> m_cachedImageForHoverState;
     bool m_isInHoverState;
 };
 
 }
 #endif