Move form-related 78 files to core/html/forms/.

Source/core/html/HTMLInputElement.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.
  * Copyright (C) 2012 Samsung Electronics. 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 HTMLInputElement_h
 #define HTMLInputElement_h
 
 #include "core/html/HTMLTextFormControlElement.h"
-#include "core/html/StepRange.h"
+#include "core/html/forms/StepRange.h"
 #include "core/platform/FileChooser.h"
 
 namespace WebCore {
 
 class CheckedRadioButtons;
 class DragData;
 class ExceptionState;
 class FileList;
 class HTMLDataListElement;
 class HTMLImageLoader;
@@ skipping 381 matching lines @@
     ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(HTMLNames::inputTag));
     return static_cast<const HTMLInputElement*>(node);
 }
 
 // This will catch anyone doing an unnecessary cast.
 void toHTMLElement(const HTMLElement*);
 
 
 } //namespace
 #endif