blink: Cleanup core class forward declarations

third_party/WebKit/Source/core/editing/PendingSelection.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 10 matching lines @@
 
 #ifndef PendingSelection_h
 #define PendingSelection_h
 
 #include "core/editing/Position.h"
 #include "core/editing/VisibleSelection.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
-class Document;
 class FrameSelection;
 class LayoutView;
 
 class PendingSelection final : public GarbageCollected<PendingSelection> {
  public:
   static PendingSelection* create(FrameSelection& frameSelection) {
     return new PendingSelection(frameSelection);
   }
 
   bool hasPendingSelection() const { return m_hasPendingSelection; }
@@ skipping 10 matching lines @@
   VisibleSelectionInFlatTree calcVisibleSelection(
       const VisibleSelectionInFlatTree&) const;
 
   Member<FrameSelection> m_frameSelection;
   bool m_hasPendingSelection : 1;
 };
 
 }  // namespace blink
 
 #endif