Remove unnecessary Document.h includes in .cpp files

Source/core/svg/SVGParserUtilities.cpp

 /*
  * Copyright (C) 2002, 2003 The Karbon Developers
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007, 2009, 2013 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.
  */
 
 #include "config.h"
 #include "core/svg/SVGParserUtilities.h"
 
-#include "core/dom/Document.h"
 #include "core/svg/SVGPointList.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/transforms/AffineTransform.h"
 #include "wtf/ASCIICType.h"
+#include "wtf/text/StringHash.h"
 #include <limits>
 
 namespace WebCore {
 
 template <typename FloatType>
 static inline bool isValidRange(const FloatType& x)
 {
     static const FloatType max = std::numeric_limits<FloatType>::max();
     return x >= -max && x <= max;
 }
@@ skipping 522 matching lines @@
         parseAndSkipTransformType(ptr, end, type);
     } else {
         const UChar* ptr = string.characters16();
         const UChar* end = ptr + string.length();
         parseAndSkipTransformType(ptr, end, type);
     }
     return type;
 }
 
 }