Replace RenderArena with PartitionAlloc.

Source/core/rendering/RenderView.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 203 matching lines @@
 
     // These functions may only be accessed by LayoutStateMaintainer.
     bool pushLayoutState(RenderBox* renderer, const LayoutSize& offset, LayoutUnit pageHeight = 0, bool pageHeightChanged = false, ColumnInfo* colInfo = 0)
     {
         // We push LayoutState even if layoutState is disabled because it stores layoutDelta too.
         if (!doingFullRepaint() || m_layoutState->isPaginated() || renderer->hasColumns() || renderer->flowThreadContainingBlock()
             || m_layoutState->lineGrid() || (renderer->style()->lineGrid() != RenderStyle::initialLineGrid() && renderer->isBlockFlow())
             || (renderer->isRenderBlock() && toRenderBlock(renderer)->exclusionShapeInsideInfo())
             || (m_layoutState->exclusionShapeInsideInfo() && renderer->isRenderBlock() && !toRenderBlock(renderer)->allowsExclusionShapeInsideInfoSharing())
             ) {
-            m_layoutState = new (renderArena()) LayoutState(m_layoutState, renderer, offset, pageHeight, pageHeightChanged, colInfo);
+            m_layoutState = new LayoutState(m_layoutState, renderer, offset, pageHeight, pageHeightChanged, colInfo);
             return true;
         }
         return false;
     }
 
     void popLayoutState()
     {
         LayoutState* state = m_layoutState;
         m_layoutState = state->m_next;
-        state->destroy(renderArena());
+        state->destroy();
     }
 
     // Suspends the LayoutState optimization. Used under transforms that cannot be represented by
     // LayoutState (common in SVG) and when manipulating the render tree during layout in ways
     // that can trigger repaint of a non-child (e.g. when a list item moves its list marker around).
     // Note that even when disabled, LayoutState is still used to store layoutDelta.
     // These functions may only be accessed by LayoutStateMaintainer or LayoutStateDisabler.
     void disableLayoutState() { m_layoutStateDisableCount++; }
     void enableLayoutState() { ASSERT(m_layoutStateDisableCount > 0); m_layoutStateDisableCount--; }
 
@@ skipping 154 matching lines @@
     RenderObject::FlowThreadState m_flowThreadState;
     bool m_fragmenting;
 #ifndef NDEBUG
     LayoutState* m_layoutState;
 #endif
 };
 
 } // namespace WebCore
 
 #endif // RenderView_h