Reduce how often LayoutSVGShape::updateShapeFromElement is called

Source/core/paint/SVGShapePainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/paint/SVGShapePainter.h"
 
 #include "core/layout/svg/LayoutSVGPath.h"
 #include "core/layout/svg/LayoutSVGResourceMarker.h"
 #include "core/layout/svg/LayoutSVGShape.h"
@@ skipping 153 matching lines @@
         return;
 
     switch (m_layoutSVGShape.geometryCodePath()) {
     case RectGeometryFastPath:
         context->drawRect(m_layoutSVGShape.objectBoundingBox(), paint);
         break;
     case EllipseGeometryFastPath:
         context->drawOval(m_layoutSVGShape.objectBoundingBox(), paint);
         break;
     default:
-        ASSERT(m_layoutSVGShape.hasPath());
         Path* usePath = &m_layoutSVGShape.path();
         if (m_layoutSVGShape.hasNonScalingStroke())
             usePath = m_layoutSVGShape.nonScalingStrokePath(usePath, m_layoutSVGShape.nonScalingStrokeTransform());
         context->drawPath(usePath->skPath(), paint);
         strokeZeroLengthLineCaps(context, paint);
     }
 }
 
 void SVGShapePainter::paintMarkers(const PaintInfo& paintInfo, const FloatRect& boundingBox)
 {
@@ skipping 72 matching lines @@
             position = nonScalingTransform.mapPoint(position);
         FloatRect subpathRect = LayoutSVGPath::zeroLengthSubpathRect(position, m_layoutSVGShape.strokeWidth());
         if (m_layoutSVGShape.style()->svgStyle().capStyle() == SquareCap)
             context->drawRect(subpathRect, fillPaint);
         else
             context->drawOval(subpathRect, fillPaint);
     }
 }
 
 } // namespace blink