Make DocumentThreadableLoader's cross origin logic clearer in terms of layering

third_party/WebKit/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 128 matching lines @@
   // 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 handleSuccessfulFinish().
   void handlePreflightResponse(const ResourceResponse&);
   void handleError(const ResourceError&);
 
   void loadRequestAsync(const ResourceRequest&, ResourceLoaderOptions);
   void loadRequestSync(const ResourceRequest&, ResourceLoaderOptions);
+
+  void prepareCrossOriginRequest(ResourceRequest&);
   void loadRequest(const ResourceRequest&, ResourceLoaderOptions);
   bool isAllowedRedirect(const KURL&) const;
   // Returns DoNotAllowStoredCredentials if m_forceDoNotAllowStoredCredentials
   // is set. Otherwise, just returns allowCredentials value of
   // m_resourceLoaderOptions.
   StoredCredentials effectiveAllowCredentials() const;
 
   // TODO(hiroshige): After crbug.com/633696 is fixed,
   // - Remove RawResourceClientStateChecker logic,
   // - Make DocumentThreadableLoader to be a ResourceOwner and remove this
@@ skipping 68 matching lines @@
   // Max number of times that this DocumentThreadableLoader can follow
   // cross-origin redirects. This is used to limit the number of redirects. But
   // this value is not the max number of total redirects allowed, because
   // same-origin redirects are not counted here.
   int m_corsRedirectLimit;
 
   WebURLRequest::FetchRedirectMode m_redirectMode;
 
   // Holds the referrer after a redirect response was received. This referrer is
   // used to populate the HTTP Referer header when following the redirect.
-  bool m_didRedirect;
+  bool m_overrideReferrer;
   Referrer m_referrerAfterRedirect;
 
   RawResourceClientStateChecker m_checker;
 };
 
 }  // namespace blink
 
 #endif  // DocumentThreadableLoader_h