Reland "Prepare blink to unify definitions of load completion"

Source/core/fetch/ResourceLoader.h

 /*
  * Copyright (C) 2005, 2006, 2011 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 90 matching lines @@
 private:
     ResourceLoader(ResourceLoaderHost*, Resource*, const ResourceLoaderOptions&);
 
     void init(const ResourceRequest&);
     void requestSynchronously();
 
     void didFinishLoadingOnePart(double finishTime, int64_t encodedDataLength);
 
     bool responseNeedsAccessControlCheck() const;
 
+    void didComplete();
+
     ResourceRequest& applyOptions(ResourceRequest&) const;
 
     OwnPtr<blink::WebURLLoader> m_loader;
     RefPtrWillBeMember<ResourceLoaderHost> m_host;
 
     ResourceRequest m_request;
     ResourceRequest m_originalRequest; // Before redirects.
 
     bool m_notifiedLoadComplete;
 
@@ skipping 24 matching lines @@
     // Used for sanity checking to make sure we don't experience illegal state
     // transitions.
     ConnectionState m_connectionState;
 
     OwnPtr<RequestCountTracker> m_requestCountTracker;
 };
 
 }
 
 #endif