Keep NaCl plugins used in app background pages alive when active.

content/browser/renderer_host/pepper/pepper_renderer_connection.h

 // Copyright 2013 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 CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_RENDERER_CONNECTION_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_RENDERER_CONNECTION_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 47 matching lines @@
       PP_Instance instance,
       const PepperRendererInstanceData& instance_data);
   void OnMsgDidDeleteInProcessInstance(PP_Instance instance);
 
   int render_process_id_;
 
   // We have a single BrowserPpapiHost per-renderer for all in-process plugins
   // running. This is just a work-around allowing new style resources to work
   // with the browser when running in-process but it means that plugin-specific
   // information (like the plugin name) won't be available.
-  scoped_ptr<BrowserPpapiHostImpl> in_process_host_;
+  scoped_refptr<BrowserPpapiHostImpl> in_process_host_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperRendererConnection);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_RENDERER_CONNECTION_H_