Move InvalidationGuard/InstanceUpdateBlocker out of SVGElementInstance

Source/core/svg/SVGLineElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 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,
@@ skipping 69 matching lines @@
     reportAttributeParsingError(parseError, name, value);
 }
 
 void SVGLineElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (!isSupportedAttribute(attrName)) {
         SVGGeometryElement::svgAttributeChanged(attrName);
         return;
     }
 
-    SVGElementInstance::InvalidationGuard invalidationGuard(this);
+    SVGElement::InvalidationGuard invalidationGuard(this);
 
     bool isLengthAttribute = attrName == SVGNames::x1Attr
                           || attrName == SVGNames::y1Attr
                           || attrName == SVGNames::x2Attr
                           || attrName == SVGNames::y2Attr;
 
     if (isLengthAttribute)
         updateRelativeLengthsInformation();
 
     RenderSVGShape* renderer = toRenderSVGShape(this->renderer());
@@ skipping 11 matching lines @@
 
 bool SVGLineElement::selfHasRelativeLengths() const
 {
     return m_x1->currentValue()->isRelative()
         || m_y1->currentValue()->isRelative()
         || m_x2->currentValue()->isRelative()
         || m_y2->currentValue()->isRelative();
 }
 
 }