Revert of Revalidate using the same Resource, attempt #2

Source/core/fetch/ResourceLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2007 Graham Dennis (graham.dennis@gmail.com)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 329 matching lines @@
                 ASSERT(m_loader);
                 WrappedResourceRequest wrappedRequest(m_request);
                 m_loader->loadAsynchronously(wrappedRequest, this);
                 return;
             }
         } else {
             // If the response successfully validated a cached resource, perform
             // the access control with respect to it. Need to do this right here
             // before the resource switches clients over to that validated resource.
             Resource* resource = m_resource;
-            if (!resource->isCacheValidator() || resourceResponse.httpStatusCode() != 304)
+            if (resource->isCacheValidator() && resourceResponse.httpStatusCode() == 304)
+                resource = m_resource->resourceToRevalidate();
+            else
                 m_resource->setResponse(resourceResponse);
             if (!m_fetcher->canAccessResource(resource, m_options.securityOrigin.get(), response.url(), ResourceFetcher::ShouldLogAccessControlErrors)) {
                 m_fetcher->didReceiveResponse(m_resource, resourceResponse);
                 cancel(ResourceError::cancelledDueToAccessCheckError(KURL(response.url())));
                 return;
             }
         }
     }
 
     m_resource->responseReceived(resourceResponse, handle.release());
@@ skipping 155 matching lines @@
     didFinishLoading(0, monotonicallyIncreasingTime(), encodedDataLength);
 }
 
 ResourceRequest& ResourceLoader::applyOptions(ResourceRequest& request) const
 {
     request.setAllowStoredCredentials(m_options.allowCredentials == AllowStoredCredentials);
     return request;
 }
 
 }