Clean up public interface of AttachmentBrokerUnprivileged.

components/nacl/loader/nacl_listener.h

Index: components/nacl/loader/nacl_listener.h
diff --git a/components/nacl/loader/nacl_listener.h b/components/nacl/loader/nacl_listener.h
index a2d617cf4f83fdf747d2deb243c7ebf40d4e6f13..7c1efe3e7580cfdfef411d159e2d49284b3b182f 100644
--- a/components/nacl/loader/nacl_listener.h
+++ b/components/nacl/loader/nacl_listener.h
@@ -22,7 +22,6 @@
 #include "ipc/ipc_listener.h"
 
 namespace IPC {
-class AttachmentBrokerUnprivileged;
 class SyncChannel;
 class SyncMessageFilter;
 }
@@ -80,8 +79,6 @@ class NaClListener : public IPC::Listener {
       const nacl::NaClResourcePrefetchResult& prefetched_resource_file);
   void OnStart(const nacl::NaClStartParams& params);
 
-  scoped_ptr<IPC::AttachmentBrokerUnprivileged> attachment_broker_;
-
   // A channel back to the browser.
   scoped_ptr<IPC::SyncChannel> channel_;