Reduce how often LayoutSVGShape::updateShapeFromElement is called

Source/core/svg/SVGGeometryElement.cpp

Index: Source/core/svg/SVGGeometryElement.cpp
diff --git a/Source/core/svg/SVGGeometryElement.cpp b/Source/core/svg/SVGGeometryElement.cpp
index 6fd2971a701dbb975fb4f2661747a5aeec39b40c..b9f6fde00546ad6b69f596229966d3ae3d09d5b0 100644
--- a/Source/core/svg/SVGGeometryElement.cpp
+++ b/Source/core/svg/SVGGeometryElement.cpp
@@ -45,6 +45,20 @@ SVGGeometryElement::SVGGeometryElement(const QualifiedName& tagName, Document& d
 {
 }
 
+void SVGGeometryElement::svgAttributeChanged(const QualifiedName& attrName)
+{
+    if (attrName == SVGNames::vector_effectAttr) {

[fs, 2015/06/01 09:09:19]

Isn't this a presentation attribute?

+        if (LayoutObject* object = layoutObject()) {
+            SVGElement::InvalidationGuard invalidationGuard(this);
+            toLayoutSVGShape(layoutObject())->setNeedsShapeUpdate();
+            markForLayoutAndParentResourceInvalidation(object);
+        }
+        return;
+    }
+
+    SVGGraphicsElement::svgAttributeChanged(attrName);
+}
+
 bool SVGGeometryElement::isPointInFill(PassRefPtrWillBeRawPtr<SVGPointTearOff> point) const
 {
     document().updateLayoutIgnorePendingStylesheets();