blink: Cleanup core class forward declarations

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

 /*
  * Copyright (C) 2006, 2007, 2008 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 27 matching lines @@
 #include "core/editing/markers/DocumentMarker.h"
 #include "core/events/InputEvent.h"
 #include "platform/PasteMode.h"
 #include "platform/heap/Handle.h"
 #include <memory>
 
 namespace blink {
 
 class CompositeEditCommand;
 class DragData;
-class DummyPageHolder;
 class EditCommandComposition;
 class EditorClient;
 class EditorInternalCommand;
 class LocalFrame;
 class HitTestResult;
 class KillRing;
 class Pasteboard;
 class SpellChecker;
 class StylePropertySet;
 class TextEvent;
@@ skipping 302 matching lines @@
   m_mark = selection;
 }
 
 inline bool Editor::markedTextMatchesAreHighlighted() const {
   return m_areMarkedTextMatchesHighlighted;
 }
 
 }  // namespace blink
 
 #endif  // Editor_h