blink: Cleanup class/struct forward declarations

third_party/WebKit/Source/core/html/HTMLTextAreaElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 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 13 matching lines @@
 #ifndef HTMLTextAreaElement_h
 #define HTMLTextAreaElement_h
 
 #include "base/gtest_prod_util.h"
 #include "core/CoreExport.h"
 #include "core/html/TextControlElement.h"
 
 namespace blink {
 
 class BeforeTextInsertedEvent;
-class ExceptionState;
 
 class CORE_EXPORT HTMLTextAreaElement final : public TextControlElement {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static HTMLTextAreaElement* create(Document&, HTMLFormElement*);
 
   unsigned cols() const { return m_cols; }
   unsigned rows() const { return m_rows; }
 
@@ skipping 106 matching lines @@
   mutable String m_value;
   mutable bool m_isDirty;
   bool m_valueIsUpToDate;
   unsigned m_isPlaceholderVisible : 1;
   String m_suggestedValue;
 };
 
 }  // namespace blink
 
 #endif  // HTMLTextAreaElement_h