Convert the PluginResource to be refcounted.

ppapi/proxy/ppb_flash_menu_proxy.cc

 // Copyright (c) 2011 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.
 
 #include "ppapi/proxy/ppb_flash_menu_proxy.h"
 
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/c/private/ppb_flash_menu.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 104 matching lines @@
   HostResource result;
   pp::proxy::SerializedFlashMenu serialized_menu;
   if (!serialized_menu.SetPPMenu(menu_data))
     return 0;
 
   dispatcher->Send(new PpapiHostMsg_PPBFlashMenu_Create(
       INTERFACE_ID_PPB_FLASH_MENU, instance_id, serialized_menu, &result));
   if (result.is_null())
     return 0;
 
-  linked_ptr<FlashMenu> menu(new FlashMenu(result));
-  return PluginResourceTracker::GetInstance()->AddResource(menu);
+  return PluginResourceTracker::GetInstance()->AddResource(
+      new FlashMenu(result));
 }
 
 bool PPB_Flash_Menu_Proxy::OnMessageReceived(const IPC::Message& msg) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_Flash_Menu_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFlashMenu_Create,
                         OnMsgCreate)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBFlashMenu_Show,
                         OnMsgShow)
 
@@ skipping 50 matching lines @@
   dispatcher()->Send(new PpapiMsg_PPBFlashMenu_ShowACK(
       INTERFACE_ID_PPB_FLASH_MENU,
       request->menu,
       request->selected_id,
       result));
   delete request;
 }
 
 }  // namespace proxy
 }  // namespace pp