Clean up forward declarations in Source/core/fetch and /loader

Source/core/fetch/RawResource.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.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #ifndef RawResource_h
 #define RawResource_h
 
 #include "core/fetch/ResourceClient.h"
 #include "core/fetch/ResourcePtr.h"
 
 namespace blink {
-class RawResourceCallback;
 class RawResourceClient;
 
 class RawResource FINAL : public Resource {
 public:
     typedef RawResourceClient ClientType;
 
     RawResource(const ResourceRequest&, Type);
 
     // FIXME: AssociatedURLLoader shouldn't be a DocumentThreadableLoader and therefore shouldn't
     // use RawResource. However, it is, and it needs to be able to defer loading.
@@ skipping 38 matching lines @@
     virtual void responseReceived(Resource*, const ResourceResponse&) { }
     virtual void dataReceived(Resource*, const char* /* data */, int /* length */) { }
     virtual void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) { }
     virtual void updateRequest(Resource*, const ResourceRequest&) { }
     virtual void dataDownloaded(Resource*, int) { }
 };
 
 }
 
 #endif // RawResource_h