Remove tons of OILPAN.

sky/engine/core/html/imports/HTMLImportLoader.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 178 matching lines @@
 bool HTMLImportLoader::shouldBlockScriptExecution() const
 {
     return firstImport()->state().shouldBlockScriptExecution();
 }
 
 PassRefPtr<CustomElementSyncMicrotaskQueue> HTMLImportLoader::microtaskQueue() const
 {
     return m_microtaskQueue;
 }
 
-void HTMLImportLoader::trace(Visitor* visitor)
-{
-    visitor->trace(m_controller);
-#if ENABLE(OILPAN)
-    visitor->trace(m_imports);
-#endif
-    visitor->trace(m_document);
-    visitor->trace(m_microtaskQueue);
-}
-
 } // namespace blink