Pass more const RenderObject& in the vicinity of paint-servers

Source/core/rendering/svg/RenderSVGResourceGradient.cpp

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * 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 27 matching lines @@
     markAllClientsForInvalidation(markForInvalidation ? PaintInvalidation : ParentOnlyInvalidation);
 }
 
 void RenderSVGResourceGradient::removeClientFromCache(RenderObject* client, bool markForInvalidation)
 {
     ASSERT(client);
     m_gradientMap.remove(client);
     markClientForInvalidation(client, markForInvalidation ? PaintInvalidation : ParentOnlyInvalidation);
 }
 
-SVGPaintServer RenderSVGResourceGradient::preparePaintServer(RenderObject* object)
+SVGPaintServer RenderSVGResourceGradient::preparePaintServer(const RenderObject& object)
 {
-    ASSERT(object);
-
     clearInvalidationMask();
 
     // Be sure to synchronize all SVG properties on the gradientElement _before_ processing any further.
     // Otherwhise the call to collectGradientAttributes() in createTileImage(), may cause the SVG DOM property
     // synchronization to kick in, which causes removeAllClientsFromCache() to be called, which in turn deletes our
     // GradientData object! Leaving out the line below will cause svg/dynamic-updates/SVG*GradientElement-svgdom* to crash.
     SVGGradientElement* gradientElement = toSVGGradientElement(element());
     if (!gradientElement)
         return SVGPaintServer::invalid();
 
     if (m_shouldCollectGradientAttributes) {
         gradientElement->synchronizeAnimatedSVGAttribute(anyQName());
         if (!collectGradientAttributes(gradientElement))
             return SVGPaintServer::invalid();
 
         m_shouldCollectGradientAttributes = false;
     }
 
     // Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
     // then the given effect (e.g. a gradient or a filter) will be ignored.
-    FloatRect objectBoundingBox = object->objectBoundingBox();
+    FloatRect objectBoundingBox = object.objectBoundingBox();
     if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && objectBoundingBox.isEmpty())
         return SVGPaintServer::invalid();
 
-    OwnPtr<GradientData>& gradientData = m_gradientMap.add(object, nullptr).storedValue->value;
+    OwnPtr<GradientData>& gradientData = m_gradientMap.add(&object, nullptr).storedValue->value;
     if (!gradientData)
         gradientData = adoptPtr(new GradientData);
 
     // Create gradient object
     if (!gradientData->gradient) {
         buildGradient(gradientData.get());
 
         // We want the text bounding box applied to the gradient space transform now, so the gradient shader can use it.
         if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && !objectBoundingBox.isEmpty()) {
             gradientData->userspaceTransform.translate(objectBoundingBox.x(), objectBoundingBox.y());
@@ skipping 47 matching lines @@
         return SpreadMethodReflect;
     case SVGSpreadMethodRepeat:
         return SpreadMethodRepeat;
     }
 
     ASSERT_NOT_REACHED();
     return SpreadMethodPad;
 }
 
 }