Replace RenderArena with PartitionAlloc.

Source/core/platform/Partitions.h

 /*
  * 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.
  */
 
-#ifndef Task_h
-#define Task_h
+#ifndef Partitions_h
+#define Partitions_h
 
-#include "wtf/Functional.h"
-#include "public/platform/WebThread.h"
+#include "wtf/PartitionAlloc.h"
 
 namespace WebCore {
 
-class Task : public WebKit::WebThread::Task {
+class Partitions {
 public:
-    explicit Task(const Closure& closure)
-        : m_closure(closure)
-    {
-    }
+    static void init();
+    static void shutdown();
 
-    virtual void run() OVERRIDE
-    {
-        m_closure();
-    }
+    ALWAYS_INLINE static PartitionRoot* getObjectModelPartition() { return &m_objectModelRoot; }
+    ALWAYS_INLINE static PartitionRoot* getRenderingPartition() { return &m_renderingRoot; }
 
 private:
-    Closure m_closure;
+    static PartitionRoot m_objectModelRoot;
+    static PartitionRoot m_renderingRoot;
 };
 
 } // namespace WebCore
 
-#endif // Task_h
+#endif // Partitions_h