First step of HTMLImports

Source/core/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, 2008, 2009, 2010, 2011 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 50 matching lines @@
     friend class InspectorResource;
     
 public:
     enum Type {
         MainResource,
         ImageResource,
         CSSStyleSheet,
         Script,
         FontResource,
         RawResource,
+        HTMLDocumentResource,
         SVGDocumentResource,
         XSLStyleSheet,
         LinkPrefetch,
         LinkSubresource,
         TextTrackResource,
         ShaderResource
     };
 
     enum Status {
         Unknown,      // let cache decide what to do with it
@@ skipping 268 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