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

Source/WebKit/chromium/src/WebSelectElement.cpp

 /*
  * 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 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "WebSelectElement.h"
 
 #include "HTMLNames.h"
 #include "core/html/HTMLOptionElement.h"
 #include "core/html/HTMLSelectElement.h"
+#include "heap/Handle.h"
 #include <public/WebString.h>
 #include <wtf/PassRefPtr.h>
 
 using namespace WebCore;
 
 namespace WebKit {
 
 void WebSelectElement::setValue(const WebString& value)
 {
     unwrap<HTMLSelectElement>()->setValue(value);
 }
 
 WebString WebSelectElement::value() const
 {
     return constUnwrap<HTMLSelectElement>()->value();
 }
 
 WebVector<WebElement> WebSelectElement::listItems() const
 {
     const Vector<HTMLElement*>& sourceItems = constUnwrap<HTMLSelectElement>()->listItems();
     WebVector<WebElement> items(sourceItems.size());
     for (size_t i = 0; i < sourceItems.size(); ++i)
         items[i] = WebElement(sourceItems[i]);
 
     return items;
 }
 
-WebSelectElement::WebSelectElement(const PassRefPtr<HTMLSelectElement>& elem)
+WebSelectElement::WebSelectElement(Handle<HTMLSelectElement> elem)
     : WebFormControlElement(elem)
 {
 }
 
-WebSelectElement& WebSelectElement::operator=(const PassRefPtr<HTMLSelectElement>& elem)
+WebSelectElement& WebSelectElement::operator=(Handle<HTMLSelectElement> elem)
 {
-    m_private = elem;
+    m_private = elem.passRefPtr();
     return *this;
 }
 
-WebSelectElement::operator PassRefPtr<HTMLSelectElement>() const
+WebSelectElement::operator Handle<HTMLSelectElement>() const
 {
-    return static_cast<HTMLSelectElement*>(m_private.get());
+    return Handle<HTMLSelectElement>(static_cast<HTMLSelectElement*>(m_private.get()));
 }
 
 } // namespace WebKit