Remove TLS access for current Zone.

src/splay-tree.h

Index: src/splay-tree.h
diff --git a/src/splay-tree.h b/src/splay-tree.h
index e21e21612540fb19d33e1f3ee1ba2b4f9ef47dc7..eb2f1da63d612025789cde9a3c1e95fbd2ed655c 100644
--- a/src/splay-tree.h
+++ b/src/splay-tree.h
@@ -153,7 +153,8 @@ class SplayTree {
   };
 
   template <class Callback>
-  void ForEach(Callback* callback);
+  void ForEach(Callback* callback,
+               AllocationPolicy allocator = AllocationPolicy());
 
  protected:
   // Resets tree root. Existing nodes become unreachable.
@@ -185,14 +186,6 @@ class SplayTree {
     DISALLOW_COPY_AND_ASSIGN(NodeToPairAdaptor);
   };
 
-  class NodeDeleter BASE_EMBEDDED {
-   public:
-    NodeDeleter() { }
-    void Call(Node* node) { AllocationPolicy::Delete(node); }
-
-   private:
-    DISALLOW_COPY_AND_ASSIGN(NodeDeleter);
-  };
 
   template <class Callback>
   void ForEachNode(Callback* callback,