Turn ResourceLoaderSet into a part object.

third_party/WebKit/Source/core/fetch/ResourceLoaderSet.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 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "core/fetch/ResourceLoaderSet.h"
 
 #include "wtf/Vector.h"
 
 namespace blink {
 
-ResourceLoaderSet* ResourceLoaderSet::create()
-{
-    return new ResourceLoaderSet;
-}
-
 DEFINE_TRACE(ResourceLoaderSet)
 {
     visitor->trace(m_set);
 }
 
 void ResourceLoaderSet::cancelAll()
 {
     HeapVector<Member<ResourceLoader>> loadersCopy;
     copyToVector(m_set, loadersCopy);
     for (const auto& loader : loadersCopy) {
         // cancelAll() can reenter. Don't cancel the same ResourceLoader twice.
         if (m_set.contains(loader))
             loader->cancel();
     }
 }
 
 void ResourceLoaderSet::setAllDefersLoading(bool defers)
 {
     HeapVector<Member<ResourceLoader>> loadersCopy;
     copyToVector(m_set, loadersCopy);
     for (const auto& loader : loadersCopy)
         loader->setDefersLoading(defers);
 }
 
 } // namespace blink