Create errors (especially cancellation errors) internally to WebCore, rather

Source/WebCore/loader/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 47 matching lines @@
     void cancelIfNotFinishing();
 
     virtual bool init(const ResourceRequest&);
 
     void start();
 
     FrameLoader* frameLoader() const;
     DocumentLoader* documentLoader() const { return m_documentLoader.get(); }
     CachedResource* cachedResource() { return m_resource; }
     const ResourceRequest& originalRequest() const { return m_originalRequest; }
-
-    ResourceError cancelledError();
-    ResourceError cannotShowURLError();
     
     virtual void setDefersLoading(bool);
     bool defersLoading() const { return m_defersLoading; }
 
     unsigned long identifier() const { return m_identifier; }
 
     virtual void releaseResources();
     const ResourceResponse& response() const;
 
     PassRefPtr<ResourceBuffer> resourceData();
@@ skipping 85 matching lines @@
 };
 
 inline const ResourceResponse& ResourceLoader::response() const
 {
     return m_response;
 }
 
 }
 
 #endif