Clean up some random includes in core/svg/ and core/rendering/svg/

Source/core/svg/SVGGradientElement.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  *
  * 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 SVGGradientElement_h
 #define SVGGradientElement_h
 
 #include "core/SVGNames.h"
-#include "core/svg/SVGAnimatedBoolean.h"
 #include "core/svg/SVGAnimatedEnumeration.h"
 #include "core/svg/SVGAnimatedTransformList.h"
 #include "core/svg/SVGElement.h"
 #include "core/svg/SVGURIReference.h"
 #include "core/svg/SVGUnitTypes.h"
 #include "platform/graphics/Gradient.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
@@ skipping 45 matching lines @@
 inline bool isSVGGradientElement(const SVGElement& element)
 {
     return element.hasTagName(SVGNames::radialGradientTag) || element.hasTagName(SVGNames::linearGradientTag);
 }
 
 DEFINE_SVGELEMENT_TYPE_CASTS_WITH_FUNCTION(SVGGradientElement);
 
 } // namespace blink
 
 #endif // SVGGradientElement_h