Use scoped_refptr for refcounted param in PluginService.

chrome/browser/plugin_service.cc

Index: chrome/browser/plugin_service.cc
diff --git a/chrome/browser/plugin_service.cc b/chrome/browser/plugin_service.cc
index 5f8602046f52af62855d337b199f9e3887540f89..a3d636b733cd7238c677fad547c725045c1570a4 100644
--- a/chrome/browser/plugin_service.cc
+++ b/chrome/browser/plugin_service.cc
@@ -260,7 +260,7 @@ void PluginService::OpenChannelToPlugin(
       BrowserThread::FILE, FROM_HERE,
       NewRunnableMethod(
           this, &PluginService::GetAllowedPluginForOpenChannelToPlugin,
-          renderer_msg_filter, url, mime_type, reply_msg));
+          make_scoped_refptr(renderer_msg_filter), url, mime_type, reply_msg));
 }
 
 void PluginService::GetAllowedPluginForOpenChannelToPlugin(
@@ -280,7 +280,8 @@ void PluginService::GetAllowedPluginForOpenChannelToPlugin(
       BrowserThread::IO, FROM_HERE,
       NewRunnableMethod(
           this, &PluginService::FinishOpenChannelToPlugin,
-          renderer_msg_filter, mime_type, plugin_path, reply_msg));
+          make_scoped_refptr(renderer_msg_filter), mime_type, plugin_path,
+          reply_msg));
 }
 
 void PluginService::FinishOpenChannelToPlugin(