Make RenderObject::style() return a const object

Source/core/rendering/svg/RenderSVGResourceClipper.cpp

Index: Source/core/rendering/svg/RenderSVGResourceClipper.cpp
diff --git a/Source/core/rendering/svg/RenderSVGResourceClipper.cpp b/Source/core/rendering/svg/RenderSVGResourceClipper.cpp
index f1c7ca7c3e3d8840a217705537e045f41cb59b2b..8278adef1c1cfbc7d4cd4efa8f13d312726feddf 100644
--- a/Source/core/rendering/svg/RenderSVGResourceClipper.cpp
+++ b/Source/core/rendering/svg/RenderSVGResourceClipper.cpp
@@ -92,7 +92,7 @@ bool RenderSVGResourceClipper::tryPathOnlyClipping(const DisplayItemClient clien
         if (!childElement->isSVGGraphicsElement())
             continue;
         SVGGraphicsElement* styled = toSVGGraphicsElement(childElement);
-        RenderStyle* style = renderer->style();
+        const RenderStyle* style = renderer->style();
         if (!style || style->display() == NONE || style->visibility() != VISIBLE)
              continue;
         const SVGRenderStyle& svgStyle = style->svgStyle();
@@ -266,7 +266,7 @@ void RenderSVGResourceClipper::createPicture(GraphicsContext* context)
         if (!renderer)
             continue;
 
-        RenderStyle* style = renderer->style();
+        const RenderStyle* style = renderer->style();
         if (!style || style->display() == NONE || style->visibility() != VISIBLE)
             continue;
 
@@ -311,7 +311,7 @@ void RenderSVGResourceClipper::calculateClipContentPaintInvalidationRect()
             continue;
         if (!renderer->isSVGShape() && !renderer->isSVGText() && !isSVGUseElement(*childElement))
             continue;
-        RenderStyle* style = renderer->style();
+        const RenderStyle* style = renderer->style();
         if (!style || style->display() == NONE || style->visibility() != VISIBLE)
              continue;
         m_clipBoundaries.unite(renderer->localToParentTransform().mapRect(renderer->paintInvalidationRectInLocalCoordinates()));