Remove OILPAN from core/dom/custom/

third_party/WebKit/Source/core/dom/custom/CustomElementUpgradeCandidateMap.cpp

 /*
  * Copyright (C) 2013 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 23 matching lines @@
 
 namespace blink {
 
 CustomElementUpgradeCandidateMap* CustomElementUpgradeCandidateMap::create()
 {
     return new CustomElementUpgradeCandidateMap();
 }
 
 CustomElementUpgradeCandidateMap::~CustomElementUpgradeCandidateMap()
 {
-#if !ENABLE(OILPAN)
-    // With Oilpan enabled, the observer table keeps a weak reference to the
-    // element; no need for explicit removal.
-    UpgradeCandidateMap::const_iterator::KeysIterator end = m_upgradeCandidates.end().keys();
-    for (UpgradeCandidateMap::const_iterator::KeysIterator it = m_upgradeCandidates.begin().keys(); it != end; ++it)
-        unobserve(*it);
-#endif
 }
 
 void CustomElementUpgradeCandidateMap::add(const CustomElementDescriptor& descriptor, Element* element)
 {
     observe(element);
 
     UpgradeCandidateMap::AddResult result = m_upgradeCandidates.add(element, descriptor);
     ASSERT_UNUSED(result, result.isNewEntry);
 
     UnresolvedDefinitionMap::iterator it = m_unresolvedDefinitions.find(descriptor);
@@ skipping 32 matching lines @@
 }
 
 DEFINE_TRACE(CustomElementUpgradeCandidateMap)
 {
     visitor->trace(m_upgradeCandidates);
     visitor->trace(m_unresolvedDefinitions);
     CustomElementObserver::trace(visitor);
 }
 
 } // namespace blink