Fix pointer-events:all when stroke="none"

Source/core/rendering/svg/RenderSVGEllipse.cpp

 /*
  * Copyright (C) 2012 Google, Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 31 matching lines @@
 RenderSVGEllipse::~RenderSVGEllipse()
 {
 }
 
 void RenderSVGEllipse::updateShapeFromElement()
 {
     // Before creating a new object we need to clear the cached bounding box
     // to avoid using garbage.
     m_fillBoundingBox = FloatRect();
     m_strokeBoundingBox = FloatRect();
+    m_hitTestStrokeBoundingBox = FloatRect();
     m_center = FloatPoint();
     m_radii = FloatSize();
     m_usePathFallback = false;
 
     calculateRadiiAndCenter();
 
     // Spec: "A negative value is an error. A value of zero disables rendering of the element."
     if (m_radii.width() < 0 || m_radii.height() < 0)
         return;
 
     if (!m_radii.isEmpty()) {
         // Fallback to RenderSVGShape and path-based hit detection if the ellipse
         // has a non-scaling or discontinuous stroke.
         if (hasNonScalingStroke() || !hasContinuousStroke()) {
             RenderSVGShape::updateShapeFromElement();
             m_usePathFallback = true;
             return;
         }
     }
 
     m_fillBoundingBox = FloatRect(m_center.x() - m_radii.width(), m_center.y() - m_radii.height(), 2 * m_radii.width(), 2 * m_radii.height());
-    m_strokeBoundingBox = m_fillBoundingBox;
-    if (style()->svgStyle().hasStroke())
-        m_strokeBoundingBox.inflate(strokeWidth() / 2);
+    m_hitTestStrokeBoundingBox = m_fillBoundingBox;
+    m_hitTestStrokeBoundingBox.inflate(strokeWidth() / 2);
+    m_strokeBoundingBox = style()->svgStyle().hasStroke() ? m_hitTestStrokeBoundingBox : m_fillBoundingBox;
 }
 
 void RenderSVGEllipse::calculateRadiiAndCenter()
 {
     ASSERT(element());
     if (isSVGCircleElement(*element())) {
         SVGCircleElement& circle = toSVGCircleElement(*element());
 
         SVGLengthContext lengthContext(&circle);
         float radius = circle.r()->currentValue()->value(lengthContext);
@@ skipping 48 matching lines @@
     return xrX * xrX + yrY * yrY <= 1.0;
 }
 
 bool RenderSVGEllipse::hasContinuousStroke() const
 {
     const SVGRenderStyle& svgStyle = style()->svgStyle();
     return svgStyle.strokeDashArray()->isEmpty();
 }
 
 }