Clean up forward declarations in Source/core/loader

Source/core/loader/appcache/ApplicationCacheHost.h

 /*
  * Copyright (c) 2009, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/WebApplicationCacheHostClient.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
     class ApplicationCache;
     class DocumentLoader;
-    class LocalFrame;
-    class ResourceLoader;
-    class ResourceError;
     class ResourceRequest;
     class ResourceResponse;
-    class SubstituteData;
 
     class ApplicationCacheHost FINAL : public NoBaseWillBeGarbageCollectedFinalized<ApplicationCacheHost>, public WebApplicationCacheHostClient {
         WTF_MAKE_NONCOPYABLE(ApplicationCacheHost);
     public:
         static PassOwnPtrWillBeRawPtr<ApplicationCacheHost> create(DocumentLoader* loader)
         {
             return adoptPtrWillBeNoop(new ApplicationCacheHost(loader));
         }
         virtual ~ApplicationCacheHost();
 
@@ skipping 114 matching lines @@
         Vector<DeferredEvent> m_deferredEvents;
 
         void dispatchDOMEvent(EventID, int progressTotal, int progressDone, WebApplicationCacheHost::ErrorReason, const String& errorURL, int errorStatus, const String& errorMessage);
 
         OwnPtr<WebApplicationCacheHost> m_host;
     };
 
 }  // namespace blink
 
 #endif  // ApplicationCacheHost_h