Introduce SVGGraphicsElement IDL interface

Source/core/svg/SVGStyledElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2007, 2008 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 408 matching lines @@
 }
 
 void SVGStyledElement::setInstanceUpdatesBlocked(bool value)
 {
     if (hasSVGRareData())
         svgRareData()->setInstanceUpdatesBlocked(value);
 }
 
 AffineTransform SVGStyledElement::localCoordinateSpaceTransform(SVGLocatable::CTMScope) const
 {
-    // To be overriden by SVGStyledLocatableElement/SVGStyledTransformableElement (or as special case SVGTextElement and SVGPatternElement)
+    // To be overriden by SVGStyledLocatableElement/SVGGraphicsElement (or as special case SVGTextElement and SVGPatternElement)
     return AffineTransform();
 }
 
 void SVGStyledElement::updateRelativeLengthsInformation(bool hasRelativeLengths, SVGStyledElement* element)
 {
     // If we're not yet in a document, this function will be called again from insertedInto(). Do nothing now.
     if (!inDocument())
         return;
 
     // An element wants to notify us that its own relative lengths state changed.
@@ skipping 36 matching lines @@
     Element* eventTarget = const_cast<SVGStyledElement *>(this);
     return eventTarget->hasEventListeners(eventNames().focusinEvent) || eventTarget->hasEventListeners(eventNames().focusoutEvent);
 }
 
 bool SVGStyledElement::isKeyboardFocusable(KeyboardEvent*) const
 {
     return isMouseFocusable();
 }
 
 }