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

Source/core/fetch/FetchContext.h

 /*
  * Copyright (C) 2013 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 24 matching lines @@
 #include "core/fetch/FetchInitiatorInfo.h"
 #include "core/fetch/Resource.h"
 #include "platform/heap/Handle.h"
 #include "platform/network/ResourceLoadPriority.h"
 #include "wtf/Noncopyable.h"
 
 namespace blink {
 
 class Document;
 class DocumentLoader;
-class LocalFrame;
 class KURL;
-class Page;
 class ResourceError;
 class ResourceLoader;
 class ResourceResponse;
 class ResourceRequest;
 
 enum FetchResourceType {
     FetchMainResource,
     FetchSubresource
 };
 
@@ skipping 18 matching lines @@
     virtual void dispatchDidReceiveData(DocumentLoader*, unsigned long identifier, const char* data, int dataLength, int encodedDataLength);
     virtual void dispatchDidDownloadData(DocumentLoader*, unsigned long identifier, int dataLength, int encodedDataLength);
     virtual void dispatchDidFinishLoading(DocumentLoader*, unsigned long identifier, double finishTime, int64_t encodedDataLength);
     virtual void dispatchDidFail(DocumentLoader*, unsigned long identifier, const ResourceError&);
     virtual void sendRemainingDelegateMessages(DocumentLoader*, unsigned long identifier, const ResourceResponse&, int dataLength);
 };
 
 }
 
 #endif