Use refs for GraphicsContext

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

 /*
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007, 2008, 2009 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 40 matching lines @@
 {
     m_imageResource->initialize(this);
 }
 
 LayoutSVGImage::~LayoutSVGImage()
 {
 }
 
 void LayoutSVGImage::willBeDestroyed()
 {
-    ImageQualityController::remove(this);
+    ImageQualityController::remove(*this);
     m_imageResource->shutdown();
     LayoutSVGModelObject::willBeDestroyed();
 }
 
 void LayoutSVGImage::updateBoundingBox()
 {
     FloatRect oldBoundaries = m_objectBoundingBox;
 
     SVGLengthContext lengthContext(element());
     m_objectBoundingBox = FloatRect(
@@ skipping 80 matching lines @@
     setShouldDoFullPaintInvalidation();
 }
 
 void LayoutSVGImage::addOutlineRects(Vector<LayoutRect>& rects, const LayoutPoint&, IncludeBlockVisualOverflowOrNot) const
 {
     // this is called from paint() after the localTransform has already been applied
     rects.append(LayoutRect(paintInvalidationRectInLocalCoordinates()));
 }
 
 } // namespace blink