Make SVGTextPositioningElement::elementFromRenderer take a reference

Source/core/rendering/svg/RenderSVGText.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010-2012. All rights reserved.
  * Copyright (C) 2012 Google Inc.
  *
@@ skipping 319 matching lines @@
         m_needsTransformUpdate = false;
         updateCachedBoundariesInParents = true;
     }
 
     if (!everHadLayout()) {
         // When laying out initially, collect all layout attributes, build the character data map,
         // and propogate resulting SVGLayoutAttributes to all RenderSVGInlineText children in the subtree.
         ASSERT(m_layoutAttributes.isEmpty());
         collectLayoutAttributes(this, m_layoutAttributes);
         updateFontInAllDescendants(this);
-        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(this);
+        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);
 
         m_needsReordering = true;
         m_needsTextMetricsUpdate = false;
         m_needsPositioningValuesUpdate = false;
         updateCachedBoundariesInParents = true;
     } else if (m_needsPositioningValuesUpdate) {
         // When the x/y/dx/dy/rotate lists change, recompute the layout attributes, and eventually
         // update the on-screen font objects as well in all descendants.
         if (m_needsTextMetricsUpdate) {
             updateFontInAllDescendants(this);
             m_needsTextMetricsUpdate = false;
         }
 
-        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(this);
+        m_layoutAttributesBuilder.buildLayoutAttributesForForSubtree(*this);
         m_needsReordering = true;
         m_needsPositioningValuesUpdate = false;
         updateCachedBoundariesInParents = true;
     } else if (m_needsTextMetricsUpdate || SVGRenderSupport::findTreeRootObject(this)->isLayoutSizeChanged()) {
         // If the root layout size changed (eg. window size changes) or the transform to the root
         // context has changed then recompute the on-screen font size.
         updateFontInAllDescendants(this, &m_layoutAttributesBuilder);
 
         ASSERT(!m_needsReordering);
         ASSERT(!m_needsPositioningValuesUpdate);
@@ skipping 142 matching lines @@
     SVGResourcesCache::clientWillBeRemovedFromTree(child);
 
     Vector<SVGTextLayoutAttributes*, 2> affectedAttributes;
     FontCachePurgePreventer fontCachePurgePreventer;
     subtreeChildWillBeRemoved(child, affectedAttributes);
     RenderSVGBlock::removeChild(child);
     subtreeChildWasRemoved(affectedAttributes);
 }
 
 }