[oilpan] Completely move HTMLFormControlElement's hierarchy to the managed heap

Source/WebKit/chromium/public/WebFormControlElement.h

 /*
  * Copyright (C) 2010 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 18 matching lines @@
  */
 
 #ifndef WebFormControlElement_h
 #define WebFormControlElement_h
 
 #include "../../../Platform/chromium/public/WebString.h"
 #include "WebElement.h"
 #include "WebFormElement.h"
 
 #if WEBKIT_IMPLEMENTATION
-namespace WebCore { class HTMLFormControlElement; }
+namespace WebCore {
+class HTMLFormControlElement;
+template<typename T> class Handle;
+}
 #endif
 
 namespace WebKit {
 
 // Provides readonly access to some properties of a DOM form control element node.
 class WebFormControlElement : public WebElement {
 public:
     WebFormControlElement() : WebElement() { }
     WebFormControlElement(const WebFormControlElement& e) : WebElement(e) { }
 
@@ skipping 12 matching lines @@
     WEBKIT_EXPORT void dispatchFormControlChangeEvent();
 
     // Returns the name that should be used for the specified |element| when
     // storing autofill data.  This is either the field name or its id, an empty
     // string if it has no name and no id.
     WEBKIT_EXPORT WebString nameForAutofill() const;
 
     WEBKIT_EXPORT WebFormElement form() const;
 
 #if WEBKIT_IMPLEMENTATION
-    WebFormControlElement(const WTF::PassRefPtr<WebCore::HTMLFormControlElement>&);
-    WebFormControlElement& operator=(const WTF::PassRefPtr<WebCore::HTMLFormControlElement>&);
-    operator WTF::PassRefPtr<WebCore::HTMLFormControlElement>() const;
+    WebFormControlElement(WebCore::Handle<WebCore::HTMLFormControlElement>);
+    WebFormControlElement& operator=(WebCore::Handle<WebCore::HTMLFormControlElement>);
+    operator WebCore::Handle<WebCore::HTMLFormControlElement>() const;
 #endif
 };
 
 } // namespace WebKit
 
 #endif