Replace RenderArena with PartitionAlloc.

Source/core/platform/Partitions.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+
 #include "config.h"
-#include "core/loader/UniqueIdentifier.h"
+#include "core/platform/Partitions.h"
 
 namespace WebCore {
 
-static unsigned long s_uniqueIdentifier = 0;
+PartitionRoot Partitions::m_objectModelRoot;
+PartitionRoot Partitions::m_renderingRoot;
 
-unsigned long createUniqueIdentifier()
+void Partitions::init()
 {
-    return ++s_uniqueIdentifier;
+    partitionAllocInit(&m_objectModelRoot);
+    partitionAllocInit(&m_renderingRoot);
+}
+
+void Partitions::shutdown()
+{
+    partitionAllocShutdown(&m_objectModelRoot);
+    partitionAllocShutdown(&m_renderingRoot);
 }
 
 } // namespace WebCore
-