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

Source/core/fetch/ResourceLoaderHost.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 19 matching lines @@
 
 #ifndef ResourceLoaderHost_h
 #define ResourceLoaderHost_h
 
 #include "platform/network/ResourceError.h"
 #include "platform/network/ResourceLoadPriority.h"
 
 namespace blink {
 
 class Resource;
-class ResourceFetcher;
-class LocalFrame;
 class ResourceLoader;
 class ResourceRequest;
 class ResourceResponse;
 
 struct FetchInitiatorInfo;
 
 class ResourceLoaderHost : public WillBeGarbageCollectedMixin {
 public:
     virtual void incrementRequestCount(const Resource*) = 0;
     virtual void decrementRequestCount(const Resource*) = 0;
@@ skipping 26 matching lines @@
     virtual void derefResourceLoaderHost() = 0;
 
     void ref() { refResourceLoaderHost(); }
     void deref() { derefResourceLoaderHost(); }
 #endif
 };
 
 }
 
 #endif // ResourceLoaderHost_h