Invalidate SVG 'transform' pres. attribute style even if not attached

third_party/WebKit/Source/core/svg/SVGGraphicsElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) 2014 Google, Inc.
  *
  * 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.
  *
@@ skipping 118 matching lines @@
 void SVGGraphicsElement::svgAttributeChanged(const QualifiedName& attrName) {
   // Reattach so the isValid() check will be run again during layoutObject
   // creation.
   if (SVGTests::isKnownAttribute(attrName)) {
     SVGElement::InvalidationGuard invalidationGuard(this);
     lazyReattachIfAttached();
     return;
   }
 
   if (attrName == SVGNames::transformAttr) {
-    LayoutObject* object = layoutObject();
-    if (!object)
-      return;
-
+    SVGElement::InvalidationGuard invalidationGuard(this);
     invalidateSVGPresentationAttributeStyle();
-
-    SVGElement::InvalidationGuard invalidationGuard(this);
     // TODO(fs): The InvalidationGuard will make sure all instances are
     // invalidated, but the style recalc will propagate to instances too. So
     // there is some redundant operations being performed here. Could we get
     // away with removing the InvalidationGuard?
     setNeedsStyleRecalc(LocalStyleChange,
                         StyleChangeReasonForTracing::fromAttribute(attrName));
-    markForLayoutAndParentResourceInvalidation(object);
+    if (LayoutObject* object = layoutObject())
+      markForLayoutAndParentResourceInvalidation(object);
     return;
   }
 
   SVGElement::svgAttributeChanged(attrName);
 }
 
 SVGElement* SVGGraphicsElement::nearestViewportElement() const {
   for (Element* current = parentOrShadowHostElement(); current;
        current = current->parentOrShadowHostElement()) {
     if (isViewportElement(*current))
@@ skipping 22 matching lines @@
 
   return layoutObject()->objectBoundingBox();
 }
 
 SVGRectTearOff* SVGGraphicsElement::getBBoxFromJavascript() {
   return SVGRectTearOff::create(SVGRect::create(getBBox()), 0,
                                 PropertyIsNotAnimVal);
 }
 
 }  // namespace blink