Replace RenderArena with PartitionAlloc.

Source/core/rendering/RenderArena.h

Index: Source/core/rendering/RenderArena.h
diff --git a/Source/core/rendering/RenderArena.h b/Source/core/rendering/RenderArena.h
deleted file mode 100644
index 255509eda6589f5fcae051a79c92f5709a6721b0..0000000000000000000000000000000000000000
--- a/Source/core/rendering/RenderArena.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2003 Apple Computer, Inc.
- *
- * Portions are Copyright (C) 1998 Netscape Communications Corporation.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * Alternatively, the contents of this file may be used under the terms
- * of either the Mozilla Public License Version 1.1, found at
- * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
- * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
- * (the "GPL"), in which case the provisions of the MPL or the GPL are
- * applicable instead of those above.  If you wish to allow use of your
- * version of this file only under the terms of one of those two
- * licenses (the MPL or the GPL) and not to allow others to use your
- * version of this file under the LGPL, indicate your decision by
- * deletingthe provisions above and replace them with the notice and
- * other provisions required by the MPL or the GPL, as the case may be.
- * If you do not delete the provisions above, a recipient may use your
- * version of this file under any of the LGPL, the MPL or the GPL.
- */
-
-#ifndef RenderArena_h
-#define RenderArena_h
-
-#include "core/platform/Arena.h"
-#include "wtf/FastAllocBase.h"
-#include "wtf/Noncopyable.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-
-namespace WebCore {
-
-static const size_t gMaxRecycledSize = 1024;
-
-class RenderArena : public RefCounted<RenderArena> {
-public:
-    static PassRefPtr<RenderArena> create() { return adoptRef(new RenderArena); }
-    ~RenderArena();
-
-    // Memory management functions
-    void* allocate(size_t);
-    void free(size_t, void*);
-
-    size_t totalRenderArenaSize() const { return m_totalSize; }
-    size_t totalRenderArenaAllocatedBytes() const { return m_totalAllocated; }
-
-private:
-    RenderArena(unsigned arenaSize = 8192);
-
-    // Underlying arena pool
-    ArenaPool m_pool;
-
-    // The mask used to secure the recycled freelist pointers.
-    uintptr_t m_mask;
-    // The recycler array is sparse with the indices being multiples of the
-    // rounding size, sizeof(void*), i.e., 0, 4, 8, 12, 16, 20, ... on 32-bit.
-    static const size_t kRecyclerShift = (sizeof(void*) == 8) ? 3 : 2;
-    void* m_recyclers[gMaxRecycledSize >> kRecyclerShift];
-
-    size_t m_totalSize;
-    size_t m_totalAllocated;
-};
-
-} // namespace WebCore
-
-#endif // RenderArena_h