Sever HTMLImportChild client connection upon disposal.

Source/core/html/imports/LinkImport.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 89 matching lines @@
     }
 }
 
 void LinkImport::didFinish()
 {
     if (!m_owner || !m_owner->inDocument())
         return;
     m_owner->scheduleEvent();
 }
 
-#if !ENABLE(OILPAN)
-void LinkImport::importChildWasDestroyed(HTMLImportChild* child)
+void LinkImport::importChildWasDisposed(HTMLImportChild* child)
 {
     ASSERT(m_child == child);
     m_child = nullptr;
     m_owner = nullptr;
 }
-#endif
 
 bool LinkImport::isSync() const
 {
     return m_owner && !m_owner->async();
 }
 
 HTMLLinkElement* LinkImport::link()
 {
     return m_owner;
 }
@@ skipping 10 matching lines @@
 }
 
 DEFINE_TRACE(LinkImport)
 {
     visitor->trace(m_child);
     HTMLImportChildClient::trace(visitor);
     LinkResource::trace(visitor);
 }
 
 } // namespace blink