Oilpan: Prepare to move PickerIndicatorElement to Oilpan heap.

Source/core/html/shadow/PickerIndicatorElement.cpp

 /*
  * 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 32 matching lines @@
 namespace WebCore {
 
 using namespace HTMLNames;
 
 inline PickerIndicatorElement::PickerIndicatorElement(Document& document, PickerIndicatorOwner& pickerIndicatorOwner)
     : HTMLDivElement(document)
     , m_pickerIndicatorOwner(&pickerIndicatorOwner)
 {
 }
 
-PassRefPtr<PickerIndicatorElement> PickerIndicatorElement::create(Document& document, PickerIndicatorOwner& pickerIndicatorOwner)
+PassRefPtrWillBeRawPtr<PickerIndicatorElement> PickerIndicatorElement::create(Document& document, PickerIndicatorOwner& pickerIndicatorOwner)
 {
-    RefPtr<PickerIndicatorElement> element = adoptRef(new PickerIndicatorElement(document, pickerIndicatorOwner));
+    RefPtrWillBeRawPtr<PickerIndicatorElement> element = adoptRefWillBeRefCountedGarbageCollected(new PickerIndicatorElement(document, pickerIndicatorOwner));
     element->setShadowPseudoId(AtomicString("-webkit-calendar-picker-indicator", AtomicString::ConstructFromLiteral));
     element->setAttribute(idAttr, ShadowElementNames::pickerIndicator());
     return element.release();
 }
 
 PickerIndicatorElement::~PickerIndicatorElement()
 {
     closePopup();
     ASSERT(!m_chooser);
 }
@@ skipping 70 matching lines @@
 {
     closePopup();
     HTMLDivElement::detach(context);
 }
 
 bool PickerIndicatorElement::isPickerIndicatorElement() const
 {
     return true;
 }
 
+void PickerIndicatorElement::trace(Visitor* visitor)
+{
+    visitor->trace(m_pickerIndicatorOwner);
+    HTMLDivElement::trace(visitor);
+}
+
 }
 
 #endif