Merge 92143 - .: REGRESSION (r39725?): Resources removed from document can not be freed until the...

Source/WebCore/loader/cache/CachedResource.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 164 matching lines @@
 
     // Caches the given metadata in association with this resource and suggests
     // that the platform persist it. The dataTypeID is a pseudo-randomly chosen
     // identifier that is used to distinguish data generated by the caller.
     void setCachedMetadata(unsigned dataTypeID, const char*, size_t);
 
     // Returns cached metadata of the given type associated with this resource.
     CachedMetadata* cachedMetadata(unsigned dataTypeID) const;
 
     bool canDelete() const { return !hasClients() && !m_request && !m_preloadCount && !m_handleCount && !m_resourceToRevalidate && !m_proxyResource; }
+    bool hasOneHandle() const { return m_handleCount == 1; }
 
     bool isExpired() const;
 
     // List of acceptable MIME types separated by ",".
     // A MIME type may contain a wildcard, e.g. "text/*".
     String accept() const { return m_accept; }
     void setAccept(const String& accept) { m_accept = accept; }
 
     bool wasCanceled() const { return m_status == Canceled; }
     bool errorOccurred() const { return (m_status == LoadError || m_status == DecodeError); }
@@ skipping 104 matching lines @@
     // If this field is non-null, the resource has a proxy for checking whether it is still up to date (see m_resourceToRevalidate).
     CachedResource* m_proxyResource;
 
     // These handles will need to be updated to point to the m_resourceToRevalidate in case we get 304 response.
     HashSet<CachedResourceHandleBase*> m_handlesToRevalidate;
 };
 
 }
 
 #endif