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

third_party/WebKit/Source/core/loader/DocumentThreadableLoader.h

Index: third_party/WebKit/Source/core/loader/DocumentThreadableLoader.h
diff --git a/third_party/WebKit/Source/core/loader/DocumentThreadableLoader.h b/third_party/WebKit/Source/core/loader/DocumentThreadableLoader.h
index 9c65950d96f9ee5c920eafc8b03466d3e6312a7f..293ed14ef4852fc878b4d1133d293e0ef0b47cdc 100644
--- a/third_party/WebKit/Source/core/loader/DocumentThreadableLoader.h
+++ b/third_party/WebKit/Source/core/loader/DocumentThreadableLoader.h
@@ -146,6 +146,8 @@ class CORE_EXPORT DocumentThreadableLoader final : public ThreadableLoader,
 
   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
@@ -234,7 +236,7 @@ class CORE_EXPORT DocumentThreadableLoader final : public ThreadableLoader,
 
   // 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;