Add support for threadsafe completion callback factory.

ppapi/proxy/ppb_flash_menu_proxy.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_PPB_FLASH_MENU_PROXY_H_
 #define PPAPI_PPB_FLASH_MENU_PROXY_H_
 
 #include "ppapi/proxy/interface_proxy.h"
-#include "ppapi/proxy/proxy_non_thread_safe_ref_count.h"
+#include "ppapi/proxy/proxy_completion_callback_factory.h"
 #include "ppapi/utility/completion_callback_factory.h"
 
 struct PP_Flash_Menu;
 struct PP_Point;
 
 namespace ppapi {
 
 class HostResource;
 
 namespace proxy {
@@ skipping 19 matching lines @@
   void OnMsgCreate(PP_Instance instance_id,
                    const SerializedFlashMenu& menu_data,
                    ppapi::HostResource* resource);
   void OnMsgShow(const ppapi::HostResource& menu,
                  const PP_Point& location);
   void OnMsgShowACK(const ppapi::HostResource& menu,
                     int32_t selected_id,
                     int32_t result);
   void SendShowACKToPlugin(int32_t result, ShowRequest* request);
 
-  pp::CompletionCallbackFactory<PPB_Flash_Menu_Proxy,
-                                ProxyNonThreadSafeRefCount> callback_factory_;
+  ProxyCompletionCallbackFactory<PPB_Flash_Menu_Proxy> callback_factory_;
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PPB_FLASH_MENU_PROXY_H_