Added field to error structures to signal existence of a stale copy in

Source/platform/network/ResourceError.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2013 Google 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 25 matching lines @@
 
 class PLATFORM_EXPORT ResourceError {
 public:
     static ResourceError cancelledError(const String& failingURL);
 
     ResourceError()
         : m_errorCode(0)
         , m_isNull(true)
         , m_isCancellation(false)
         , m_isTimeout(false)
+        , m_staleCopyInCache(false)
     {
     }
 
     ResourceError(const String& domain, int errorCode, const String& failingURL, const String& localizedDescription)
         : m_domain(domain)
         , m_errorCode(errorCode)
         , m_failingURL(failingURL)
         , m_localizedDescription(localizedDescription)
         , m_isNull(false)
         , m_isCancellation(false)
         , m_isTimeout(false)
+        , m_staleCopyInCache(false)
     {
     }
 
     // Makes a deep copy. Useful for when you need to use a ResourceError on another thread.
     ResourceError copy() const;
 
     bool isNull() const { return m_isNull; }
 
     const String& domain() const { return m_domain; }
     int errorCode() const { return m_errorCode; }
     const String& failingURL() const { return m_failingURL; }
     const String& localizedDescription() const { return m_localizedDescription; }
 
     void setIsCancellation(bool isCancellation) { m_isCancellation = isCancellation; }
     bool isCancellation() const { return m_isCancellation; }
 
     void setIsTimeout(bool isTimeout) { m_isTimeout = isTimeout; }
     bool isTimeout() const { return m_isTimeout; }
+    void setStaleCopyInCache(bool staleCopyInCache) { m_staleCopyInCache = staleCopyInCache; }
+    bool staleCopyInCache() const { return m_staleCopyInCache; }
 
     static bool compare(const ResourceError&, const ResourceError&);
 
 private:
     String m_domain;
     int m_errorCode;
     String m_failingURL;
     String m_localizedDescription;
     bool m_isNull;
     bool m_isCancellation;
     bool m_isTimeout;
+    bool m_staleCopyInCache;
 };
 
 inline bool operator==(const ResourceError& a, const ResourceError& b) { return ResourceError::compare(a, b); }
 inline bool operator!=(const ResourceError& a, const ResourceError& b) { return !(a == b); }
 
 } // namespace WebCore
 
 #endif // ResourceError_h