Rename methods in DocumentThreadableLoader for readability

Source/core/loader/DocumentThreadableLoader.h

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013, Intel Corporation
  *
  * 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.
@@ skipping 69 matching lines @@
         void cancelWithError(const ResourceError&);
 
         // Methods containing code to handle resource fetch results which is
         // common to both sync and async mode.
         void handleResponse(unsigned long identifier, const ResourceResponse&);
         void handleReceivedData(const char* data, int dataLength);
         void handleSuccessfulFinish(unsigned long identifier, double finishTime);
 
         void didTimeout(Timer<DocumentThreadableLoader>*);
         void makeCrossOriginAccessRequest(const ResourceRequest&);
-        void preflightSuccess();
-        void preflightFailure(const String& url, const String& errorDescription);
+        // Loads m_actualRequest.
+        void loadActualRequest();
+        // Clears m_actualRequest and reports access control check failure to
+        // m_client.
+        void handlePreflightFailure(const String& url, const String& errorDescription);
         // Investigates the response for the preflight request. If successful,
-        // the actual request will be made later in didFinishLoading().
+        // the actual request will be made later in handleSuccessfulFinish().
         void handlePreflightResponse(unsigned long identifier, const ResourceResponse&);
 
         void loadRequest(const ResourceRequest&);
         bool isAllowedRedirect(const KURL&) const;
         bool isAllowedByPolicy(const KURL&) const;
 
         SecurityOrigin* securityOrigin() const;
 
         ThreadableLoaderClient* m_client;
         Document& m_document;
         ThreadableLoaderOptions m_options;
         bool m_sameOriginRequest;
         bool m_simpleRequest;
         bool m_async;
         OwnPtr<ResourceRequest> m_actualRequest; // non-null during Access Control preflight checks
         HTTPHeaderMap m_simpleRequestHeaders; // stores simple request headers in case of a cross-origin redirect.
         Timer<DocumentThreadableLoader> m_timeoutTimer;
     };
 
 } // namespace WebCore
 
 #endif // DocumentThreadableLoader_h