Turn ResourceLoaderSet into a part object.

third_party/WebKit/Source/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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ResourceLoaderSet_h
 #define ResourceLoaderSet_h
 
 #include "core/fetch/ResourceLoader.h"
 #include "wtf/HashSet.h"
+#include "wtf/Noncopyable.h"
 
 namespace blink {
 
-class ResourceLoaderSet final : public GarbageCollected<ResourceLoaderSet> {
+class ResourceLoaderSet final {
+    DISALLOW_NEW();
+    WTF_MAKE_NONCOPYABLE(ResourceLoaderSet);
 public:
+    ResourceLoaderSet()
+    {
+    }
+
     using SetType = HeapHashSet<Member<ResourceLoader>>;
 
-    static ResourceLoaderSet* create();
     DECLARE_TRACE();
 
     void add(ResourceLoader* loader) { m_set.add(loader); }
     void remove(ResourceLoader* loader) { m_set.remove(loader); }
     bool isEmpty() const { return m_set.isEmpty(); }
     bool contains(ResourceLoader* loader) const { return m_set.contains(loader); }
     void cancelAll();
     void setAllDefersLoading(bool);
     int size() const { return m_set.size(); }
 
 private:
     SetType m_set;
 };
 
 } // namespace blink
 
 #endif