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

Source/core/html/HTMLOptionsCollection.cpp

 /*
  * Copyright (C) 2006, 2011, 2012 Apple Computer, Inc.
  *
  * 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 41 matching lines @@
         ec = TYPE_MISMATCH_ERR;
         return;
     }
 
     if (index < -1) {
         ec = INDEX_SIZE_ERR;
         return;
     }
 
     ec = 0;
-    HTMLSelectElement* select = toHTMLSelectElement(ownerNode());
+    Handle<HTMLSelectElement> select = toHTMLSelectElement(ownerNode());
 
     if (index == -1 || unsigned(index) >= length())
         select->add(newOption, 0, ec);
     else
         select->add(newOption, static_cast<HTMLOptionElement*>(item(index)), ec);
 
     ASSERT(!ec);
 }
 
 void HTMLOptionsCollection::remove(int index)
@@ skipping 10 matching lines @@
 {
     toHTMLSelectElement(ownerNode())->setSelectedIndex(index);
 }
 
 void HTMLOptionsCollection::setLength(unsigned length, ExceptionCode& ec)
 {
     toHTMLSelectElement(ownerNode())->setLength(length, ec);
 }
 
 } //namespace