Replace RenderArena with PartitionAlloc.

Source/core/rendering/RenderLineBoxList.h

 /*
  * Copyright (C) 2009 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
@@ skipping 35 matching lines @@
     ~RenderLineBoxList();
 #endif
 
     InlineFlowBox* firstLineBox() const { return m_firstLineBox; }
     InlineFlowBox* lastLineBox() const { return m_lastLineBox; }
 
     void checkConsistency() const;
 
     void appendLineBox(InlineFlowBox*);
 
-    void deleteLineBoxTree(RenderArena*);
-    void deleteLineBoxes(RenderArena*);
+    void deleteLineBoxTree();
+    void deleteLineBoxes();
 
     void extractLineBox(InlineFlowBox*);
     void attachLineBox(InlineFlowBox*);
     void removeLineBox(InlineFlowBox*);
     
     void dirtyLineBoxes();
     void dirtyLinesFromChangedChild(RenderObject* parent, RenderObject* child);
 
     void paint(RenderBoxModelObject*, PaintInfo&, const LayoutPoint&) const;
     bool hitTest(RenderBoxModelObject*, const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) const;
@@ skipping 13 matching lines @@
 
 #ifdef NDEBUG
 inline void RenderLineBoxList::checkConsistency() const
 {
 }
 #endif
 
 } // namespace WebCore
 
 #endif // RenderFlow_h