blink: Cleanup class/struct forward declarations

third_party/WebKit/Source/core/loader/ImageLoader.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2009 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 17 matching lines @@
 #include "core/fetch/ImageResourceObserver.h"
 #include "platform/heap/Handle.h"
 #include "wtf/HashSet.h"
 #include "wtf/WeakPtr.h"
 #include "wtf/text/AtomicString.h"
 #include <memory>
 
 namespace blink {
 
 class IncrementLoadEventDelayCount;
-class Document;
 class Element;
 class ImageLoader;
 class LayoutImageResource;
 
 template <typename T>
 class EventSender;
 using ImageEventSender = EventSender<ImageLoader>;
 
 class CORE_EXPORT ImageLoader : public GarbageCollectedFinalized<ImageLoader>,
                                 public ImageResourceObserver {
@@ skipping 114 matching lines @@
   bool m_hasPendingErrorEvent : 1;
   bool m_imageComplete : 1;
   bool m_loadingImageDocument : 1;
   bool m_elementIsProtected : 1;
   bool m_suppressErrorEvents : 1;
 };
 
 }  // namespace blink
 
 #endif