Use refs for GraphicsContext

third_party/WebKit/Source/core/svg/graphics/filters/SVGFEImage.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2005 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2010 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2013 Google Inc. 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
@@ skipping 159 matching lines @@
         // Build up a transformation that maps from the viewport space to the filter primitive subregion.
         if (lengthContext.determineViewport(viewportSize))
             transform = makeMapBetweenRects(FloatRect(FloatPoint(), viewportSize), dstRect);
     } else {
         transform.translate(dstRect.x(), dstRect.y());
     }
 
     SkPictureBuilder filterPicture(dstRect);
     {
         TransformRecorder transformRecorder(filterPicture.context(), layoutObject, transform);
-        SVGPaintContext::paintSubtree(&filterPicture.context(), &layoutObject);
+        SVGPaintContext::paintSubtree(filterPicture.context(), &layoutObject);
     }
     RefPtr<const SkPicture> recording = filterPicture.endRecording();
 
     RefPtr<SkImageFilter> result = adoptRef(SkPictureImageFilter::Create(recording.get(), dstRect));
     return result.release();
 }
 
 PassRefPtr<SkImageFilter> FEImage::createImageFilter(SkiaImageFilterBuilder& builder)
 {
     if (auto* layoutObject = referencedLayoutObject())
@@ skipping 10 matching lines @@
 
     FloatRect srcRect = FloatRect(FloatPoint(), FloatSize(m_image->size()));
     FloatRect dstRect = filterPrimitiveSubregion();
 
     m_preserveAspectRatio->transformRect(dstRect, srcRect);
 
     return adoptRef(SkImageSource::Create(image.get(), srcRect, dstRect, kHigh_SkFilterQuality));
 }
 
 } // namespace blink