Avoid RefPtr churn

third_party/WebKit/Source/core/style/StyleFetchedImageSet.cpp

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 105 matching lines @@
     m_bestFitImage->addClient(layoutObject);
 }
 
 void StyleFetchedImageSet::removeClient(LayoutObject* layoutObject)
 {
     m_bestFitImage->removeClient(layoutObject);
 }
 
 PassRefPtr<Image> StyleFetchedImageSet::image(const LayoutObject*, const IntSize& containerSize, float zoom) const
 {
-    RefPtr<Image> image = m_bestFitImage->image();
-    if (image && image->isSVGImage())
-        return SVGImageForContainer::create(toSVGImage(image.get()), containerSize, zoom, m_url);
-    return image;
+    if (!m_bestFitImage->image()->isSVGImage())
+        return m_bestFitImage->image();
+
+    return SVGImageForContainer::create(toSVGImage(m_bestFitImage->image()), containerSize, zoom, m_url);
 }
 
 bool StyleFetchedImageSet::knownToBeOpaque(const LayoutObject* layoutObject) const
 {
     return m_bestFitImage->currentFrameKnownToBeOpaque(layoutObject);
 }
 
 DEFINE_TRACE(StyleFetchedImageSet)
 {
     visitor->trace(m_imageSetValue);
     StyleImage::trace(visitor);
 }
 
 } // namespace blink