Remove unused includes from core/{editing,fileapi,history,html}

Source/core/html/StepRange.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 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.
  *
  * 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 StepRange_h
 #define StepRange_h
 
 #include "core/platform/Decimal.h"
-#include <wtf/Forward.h>
-#include <wtf/Noncopyable.h>
+#include "wtf/Forward.h"
 
 namespace WebCore {
 
 class HTMLInputElement;
 
 enum AnyStepHandling { RejectAny, AnyIsDefaultStep };
 
 class StepRange {
 public:
     enum StepValueShouldBe {
@@ skipping 76 matching lines @@
     const Decimal m_minimum;
     const Decimal m_step;
     const Decimal m_stepBase;
     const StepDescription m_stepDescription;
     const bool m_hasStep;
 };
 
 }
 
 #endif // StepRange_h