Convert some Shape code to use references

Source/core/rendering/RenderBlock.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple 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
  * version 2 of the License, or (at your option) any later version.
@@ skipping 237 matching lines @@
     LayoutUnit logicalLeftOffsetForContent() const { return isHorizontalWritingMode() ? borderLeft() + paddingLeft() : borderTop() + paddingTop(); }
     LayoutUnit logicalRightOffsetForContent() const { return logicalLeftOffsetForContent() + availableLogicalWidth(); }
     LayoutUnit startOffsetForContent() const { return style()->isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
     LayoutUnit endOffsetForContent() const { return !style()->isLeftToRightDirection() ? logicalLeftOffsetForContent() : logicalWidth() - logicalRightOffsetForContent(); }
 
 #ifndef NDEBUG
     void checkPositionedObjectsNeedLayout();
     void showLineTreeAndMark(const InlineBox* = 0, const char* = 0, const InlineBox* = 0, const char* = 0, const RenderObject* = 0) const;
 #endif
 
-    ShapeInsideInfo* ensureShapeInsideInfo()
+    ShapeInsideInfo& ensureShapeInsideInfo()
     {
         if (!m_rareData || !m_rareData->m_shapeInsideInfo)
-            setShapeInsideInfo(ShapeInsideInfo::createInfo(this));
-        return m_rareData->m_shapeInsideInfo.get();
+            setShapeInsideInfo(ShapeInsideInfo::createInfo(*this));
+        return *m_rareData->m_shapeInsideInfo;
     }
     ShapeInsideInfo* shapeInsideInfo() const
     {
-        return m_rareData && m_rareData->m_shapeInsideInfo && ShapeInsideInfo::isEnabledFor(this) ? m_rareData->m_shapeInsideInfo.get() : 0;
+        return m_rareData && m_rareData->m_shapeInsideInfo && ShapeInsideInfo::isEnabledFor(*this) ? m_rareData->m_shapeInsideInfo.get() : 0;
     }
     void setShapeInsideInfo(PassOwnPtr<ShapeInsideInfo> value)
     {
         if (!m_rareData)
             m_rareData = adoptPtr(new RenderBlockRareData());
         m_rareData->m_shapeInsideInfo = value;
     }
     ShapeInsideInfo* layoutShapeInsideInfo() const;
     bool allowsShapeInsideInfoSharing(const RenderBlock* other) const;
     LayoutSize logicalOffsetFromShapeAncestorContainer(const RenderBlock* container) const;
@@ skipping 301 matching lines @@
             return false;
     }
     return true;
 }
 
 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBlock, isRenderBlock());
 
 } // namespace WebCore
 
 #endif // RenderBlock_h