Remove tons of OILPAN.

sky/engine/core/fetch/ResourceLoaderSet.h

 /*
  * 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 @@
 #include "core/fetch/ResourceLoader.h"
 #include "wtf/HashSet.h"
 
 namespace blink {
 
 class ResourceLoaderSet final {
 public:
     typedef HashSet<RefPtr<ResourceLoader> > SetType;
 
     static PassOwnPtr<ResourceLoaderSet> create();
-    void trace(Visitor*);
 
     void add(const RefPtr<ResourceLoader>& loader) { m_set.add(loader); }
     void remove(const RefPtr<ResourceLoader>& loader) { m_set.remove(loader); }
     bool isEmpty() const { return m_set.isEmpty(); }
     bool contains(const RefPtr<ResourceLoader>& loader) const { return m_set.contains(loader); }
     void cancelAll();
 
 private:
     SetType m_set;
 };
 
 }
 
 #endif