Make ThreadableLoader class to use references

Source/web/AssociatedURLLoader.cpp

 /*
  * Copyright (C) 2010, 2011, 2012 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 330 matching lines @@
     if (allowLoad) {
         ThreadableLoaderOptions options;
         options.sniffContent = m_options.sniffContent ? SniffContent : DoNotSniffContent;
         options.allowCredentials = m_options.allowCredentials ? AllowStoredCredentials : DoNotAllowStoredCredentials;
         options.preflightPolicy = static_cast<WebCore::PreflightPolicy>(m_options.preflightPolicy);
         options.crossOriginRequestPolicy = static_cast<WebCore::CrossOriginRequestPolicy>(m_options.crossOriginRequestPolicy);
         options.dataBufferingPolicy = DoNotBufferData;
 
         const ResourceRequest& webcoreRequest = newRequest.toResourceRequest();
         Document* webcoreDocument = m_frameImpl->frame()->document();
-        m_loader = DocumentThreadableLoader::create(webcoreDocument, m_clientAdapter.get(), webcoreRequest, options);
+        ASSERT(webcoreDocument);
+        m_loader = DocumentThreadableLoader::create(*webcoreDocument, m_clientAdapter.get(), webcoreRequest, options);
     } else {
         // FIXME: return meaningful error codes.
         m_clientAdapter->setDelayedError(ResourceError());
     }
     m_clientAdapter->enableErrorNotifications();
 }
 
 void AssociatedURLLoader::cancel()
 {
     if (m_clientAdapter)
         m_clientAdapter->clearClient();
     if (m_loader)
         m_loader->cancel();
 }
 
 void AssociatedURLLoader::setDefersLoading(bool defersLoading)
 {
     if (m_loader)
         m_loader->setDefersLoading(defersLoading);
 }
 
 } // namespace blink