[SVG2] Merge SVGStyledElement into SVGElement

Source/core/svg/SVGElementInstance.cpp

Index: Source/core/svg/SVGElementInstance.cpp
diff --git a/Source/core/svg/SVGElementInstance.cpp b/Source/core/svg/SVGElementInstance.cpp
index c9e7259c7954ae5daacbabe3e9ea45c74a039cb7..a25bf7f489e49cd6fa142a30b5d6e664d9562c3a 100644
--- a/Source/core/svg/SVGElementInstance.cpp
+++ b/Source/core/svg/SVGElementInstance.cpp
@@ -172,7 +172,7 @@ void SVGElementInstance::invalidateAllInstancesOfElement(SVGElement* element)
     if (!element || !element->inDocument())
         return;
 
-    if (element->isSVGStyledElement() && toSVGStyledElement(element)->instanceUpdatesBlocked())
+    if (element->instanceUpdatesBlocked())
         return;
 
     const HashSet<SVGElementInstance*>& set = element->instancesForElement();
@@ -256,7 +256,7 @@ EventTargetData* SVGElementInstance::ensureEventTargetData()
 }
 
 SVGElementInstance::InstanceUpdateBlocker::InstanceUpdateBlocker(SVGElement* targetElement)
-    : m_targetElement(targetElement->isSVGStyledElement() ? toSVGStyledElement(targetElement) : 0)
+    : m_targetElement(targetElement)
 {
     if (m_targetElement)
         m_targetElement->setInstanceUpdatesBlocked(true);