Use refs for GraphicsContext

third_party/WebKit/Source/core/layout/svg/LayoutSVGResourcePattern.cpp

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright 2014 The Chromium Authors. 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 182 matching lines @@
     SkPictureBuilder pictureBuilder(bounds);
 
     const LayoutSVGResourceContainer* patternLayoutObject = resolveContentElement();
     ASSERT(patternLayoutObject && !patternLayoutObject->needsLayout());
 
     SubtreeContentTransformScope contentTransformScope(contentTransform);
 
     {
         TransformRecorder transformRecorder(pictureBuilder.context(), *patternLayoutObject, tileTransform);
         for (LayoutObject* child = patternLayoutObject->firstChild(); child; child = child->nextSibling())
-            SVGPaintContext::paintSubtree(&pictureBuilder.context(), child);
+            SVGPaintContext::paintSubtree(pictureBuilder.context(), child);
     }
 
     return pictureBuilder.endRecording();
 }
 
 }