bg_thread         161 chrome/test/data/nacl/postmessage_redir/pm_redir_test.cc                      bg_thread,
bg_thread         100 ppapi/host/resource_message_filter_unittest.cc                    const base::Thread& bg_thread,
bg_thread         104 ppapi/host/resource_message_filter_unittest.cc         message_loop_proxy_(bg_thread.message_loop_proxy()),