blink: Cleanup class/struct forward declarations

third_party/WebKit/Source/core/fetch/Resource.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
@@ skipping 29 matching lines @@
 #include "wtf/Allocator.h"
 #include "wtf/AutoReset.h"
 #include "wtf/HashCountedSet.h"
 #include "wtf/HashSet.h"
 #include "wtf/text/WTFString.h"
 #include <memory>
 
 namespace blink {
 
 struct FetchInitiatorInfo;
-class CachedMetadata;
 class FetchRequest;
 class ResourceClient;
 class ResourceTimingInfo;
 class ResourceLoader;
 class SecurityOrigin;
 
 // A resource that is held in the cache. Classes who want to use this object
 // should derive from ResourceClient, to get the function calls in case the
 // requested data has arrived. This class also does the actual communication
 // with the loader to obtain the resource from the network.
@@ skipping 431 matching lines @@
 };
 
 #define DEFINE_RESOURCE_TYPE_CASTS(typeName)                   \
   DEFINE_TYPE_CASTS(typeName##Resource, Resource, resource,    \
                     resource->getType() == Resource::typeName, \
                     resource.getType() == Resource::typeName);
 
 }  // namespace blink
 
 #endif