Oilpan: Prepare moving AXObject to heap

Source/modules/accessibility/AXMenuListPopup.cpp

 /*
  * Copyright (C) 2010 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 123 matching lines @@
     if (!m_haveChildren)
         addChildren();
 }
 
 void AXMenuListPopup::didUpdateActiveOption(int optionIndex)
 {
     updateChildrenIfNecessary();
 
     AXObjectCacheImpl& cache = axObjectCache();
     if (m_activeIndex != optionIndex && m_activeIndex >= 0 && m_activeIndex < static_cast<int>(m_children.size())) {
-        RefPtr<AXObject> previousChild = m_children[m_activeIndex].get();
+        RefPtrWillBeRawPtr<AXObject> previousChild = m_children[m_activeIndex].get();
         cache.postNotification(previousChild.get(), AXObjectCacheImpl::AXMenuListItemUnselected);
     }
 
     if (optionIndex >= 0 && optionIndex < static_cast<int>(m_children.size())) {
-        RefPtr<AXObject> child = m_children[optionIndex].get();
+        RefPtrWillBeRawPtr<AXObject> child = m_children[optionIndex].get();
         cache.postNotification(child.get(), AXObjectCacheImpl::AXFocusedUIElementChanged);
         cache.postNotification(child.get(), AXObjectCacheImpl::AXMenuListItemSelected);
     }
 
     m_activeIndex = optionIndex;
 }
 
 void AXMenuListPopup::didHide()
 {
     AXObjectCacheImpl& cache = axObjectCache();
@@ skipping 18 matching lines @@
 
 AXObject* AXMenuListPopup::activeChild()
 {
     if (m_activeIndex < 0 || m_activeIndex >= static_cast<int>(children().size()))
         return nullptr;
 
     return m_children[m_activeIndex].get();
 }
 
 } // namespace blink