Remove ~1750 superfluous includes from core

Source/core/svg/SVGAnimationElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 12 matching lines @@
  */
 
 #include "config.h"
 
 #include "core/svg/SVGAnimationElement.h"
 
 #include "CSSPropertyNames.h"
 #include "SVGNames.h"
 #include "core/css/CSSComputedStyleDeclaration.h"
 #include "core/css/CSSParser.h"
-#include "core/dom/Attribute.h"
-#include "core/dom/Document.h"
 #include "core/platform/FloatConversion.h"
-#include "core/rendering/RenderObject.h"
 #include "core/svg/SVGAnimateElement.h"
-#include "core/svg/SVGElementInstance.h"
 #include "core/svg/SVGParserUtilities.h"
 #include "core/svg/SVGStyledElement.h"
 #include <wtf/MathExtras.h>
 
 namespace WebCore {
 
 // Animated property definitions
 DEFINE_ANIMATED_BOOLEAN(SVGAnimationElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
 
 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGAnimationElement)
@@ skipping 643 matching lines @@
     SVGSMILElement::setAttributeName(attributeName);
     checkInvalidCSSAttributeType(targetElement());
 }
 
 void SVGAnimationElement::checkInvalidCSSAttributeType(SVGElement* target)
 {
     m_hasInvalidCSSAttributeType = target && hasValidAttributeName() && attributeType() == AttributeTypeCSS && !isTargetAttributeCSSProperty(target, attributeName());
 }
 
 }