Replace forward class declarations of VisiblePosition to include directives

Source/core/html/HTMLTextFormControlElement.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, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010, 2011 Google 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef HTMLTextFormControlElement_h
 #define HTMLTextFormControlElement_h
 
 #include "core/CoreExport.h"
-#include "core/editing/Position.h"
+#include "core/editing/VisiblePosition.h"
 #include "core/html/HTMLFormControlElementWithState.h"
 
 namespace blink {
 
 class ExceptionState;
 class Range;
-class VisiblePosition;
 
 enum TextFieldSelectionDirection { SelectionHasNoDirection, SelectionHasForwardDirection, SelectionHasBackwardDirection };
 enum TextFieldEventBehavior { DispatchNoEvent, DispatchChangeEvent, DispatchInputAndChangeEvent };
 enum NeedToDispatchSelectEvent { DispatchSelectEvent, NotDispatchSelectEvent };
 
 class CORE_EXPORT HTMLTextFormControlElement : public HTMLFormControlElementWithState {
 public:
     // Common flag for HTMLInputElement::tooLong(), HTMLTextAreaElement::tooLong(),
     // HTMLInputElement::tooShort() and HTMLTextAreaElement::tooShort().
     enum NeedsToCheckDirtyFlag {CheckDirtyFlag, IgnoreDirtyFlag};
@@ skipping 121 matching lines @@
 }
 
 DEFINE_HTMLELEMENT_TYPE_CASTS_WITH_FUNCTION(HTMLTextFormControlElement);
 
 HTMLTextFormControlElement* enclosingTextFormControl(const Position&);
 HTMLTextFormControlElement* enclosingTextFormControl(Node*);
 
 } // namespace
 
 #endif