diff -r 000000000000 -r 4f2f89ce4247 WebCore/rendering/BidiRun.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/BidiRun.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,74 @@
+/**
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
+ * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
+ *
+ * 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,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "BidiRun.h"
+#include "InlineBox.h"
+#include "RenderArena.h"
+#include <wtf/RefCountedLeakCounter.h>
+
+using namespace WTF;
+
+namespace WebCore {
+
+#ifndef NDEBUG
+static RefCountedLeakCounter bidiRunCounter("BidiRun");
+
+static bool inBidiRunDestroy;
+#endif
+
+void BidiRun::destroy()
+{
+#ifndef NDEBUG
+    inBidiRunDestroy = true;
+#endif
+    RenderArena* renderArena = m_object->renderArena();
+    delete this;
+#ifndef NDEBUG
+    inBidiRunDestroy = false;
+#endif
+
+    // Recover the size left there for us by operator delete and free the memory.
+    renderArena->free(*reinterpret_cast<size_t*>(this), this);
+}
+
+void* BidiRun::operator new(size_t sz, RenderArena* renderArena) throw()
+{
+#ifndef NDEBUG
+    bidiRunCounter.increment();
+#endif
+    return renderArena->allocate(sz);
+}
+
+void BidiRun::operator delete(void* ptr, size_t sz)
+{
+#ifndef NDEBUG
+    bidiRunCounter.decrement();
+#endif
+    ASSERT(inBidiRunDestroy);
+
+    // Stash size where destroy() can find it.
+    *(size_t*)ptr = sz;
+}
+
+}