Clean up forward declarations in Source/core/loader

Source/core/loader/FrameLoaderClient.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2012 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 26 matching lines @@
 #include "platform/network/ResourceLoadPriority.h"
 #include "platform/weborigin/Referrer.h"
 #include "wtf/Forward.h"
 #include "wtf/Vector.h"
 #include <v8.h>
 
 namespace blink {
 class WebCookieJar;
 class WebRTCPeerConnectionHandler;
 class WebServiceWorkerProvider;
-class WebServiceWorkerProviderClient;
 class WebSocketHandle;
 class WebApplicationCacheHost;
 class WebApplicationCacheHostClient;
 }
 
 namespace blink {
 
-    class Color;
-    class DOMWindowExtension;
-    class DOMWrapperWorld;
     class DocumentLoader;
-    class Element;
     class FetchRequest;
-    class FrameLoader;
-    class FrameNetworkingContext;
     class HTMLAppletElement;
     class HTMLFormElement;
     class HTMLFrameOwnerElement;
     class HTMLPlugInElement;
     class HistoryItem;
-    class IntSize;
     class KURL;
     class LocalFrame;
     class MessageEvent;
-    class Page;
-    class PluginView;
     class ResourceError;
-    class ResourceHandle;
     class ResourceRequest;
     class ResourceResponse;
     class SecurityOrigin;
-    class SharedBuffer;
     class SharedWorkerRepositoryClient;
     class SocketStreamHandle;
     class SubstituteData;
     class Widget;
 
     class FrameLoaderClient : public FrameClient {
     public:
         virtual ~FrameLoaderClient() { }
 
         virtual bool hasWebView() const = 0; // mainly for assertions
@@ skipping 140 matching lines @@
         virtual void didStopAllLoaders() { }
 
         virtual void dispatchDidChangeManifest() { }
 
         virtual bool isFrameLoaderClientImpl() const { return false; }
     };
 
 } // namespace blink
 
 #endif // FrameLoaderClient_h