Make RenderObject::style() return a const object

Source/core/rendering/svg/SVGRenderSupport.cpp

 /*
  * Copyright (C) 2007, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2009-2010. 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
@@ skipping 382 matching lines @@
     DashArray dashArray;
     if (!dashes->isEmpty()) {
         SVGLengthList::ConstIterator it = dashes->begin();
         SVGLengthList::ConstIterator itEnd = dashes->end();
         for (; it != itEnd; ++it)
             dashArray.append(it->value(lengthContext));
     }
     strokeData->setLineDash(dashArray, svgStyle.strokeDashOffset()->value(lengthContext));
 }
 
-bool SVGRenderSupport::updateGraphicsContext(const PaintInfo& paintInfo, GraphicsContextStateSaver& stateSaver, RenderStyle* style, RenderObject& renderer, RenderSVGResourceMode resourceMode, const AffineTransform* additionalPaintServerTransform)
+bool SVGRenderSupport::updateGraphicsContext(const PaintInfo& paintInfo, GraphicsContextStateSaver& stateSaver, const RenderStyle* style, RenderObject& renderer, RenderSVGResourceMode resourceMode, const AffineTransform* additionalPaintServerTransform)
 {
     ASSERT(style);
     ASSERT(paintInfo.context == stateSaver.context());
 
     GraphicsContext* context = paintInfo.context;
     if (paintInfo.isRenderingClipPathAsMaskImage()) {
         if (resourceMode == ApplyToStrokeMode)
             return false;
         context->setAlphaAsFloat(1);
         context->setFillColor(SVGRenderStyle::initialFillPaintColor());
@@ skipping 45 matching lines @@
         return false;
     return willIsolateBlendingDescendantsForStyle(object->style());
 }
 
 bool SVGRenderSupport::isIsolationRequired(const RenderObject* object)
 {
     return willIsolateBlendingDescendantsForObject(object) && object->hasNonIsolatedBlendingDescendants();
 }
 
 }