Revert "Revert "init: warn slow action"" am: 8b1d526a am: 3567c7c9

    Timer t;

    int result = command.InvokeFunc();

    // TODO: this should probably be changed to "if (failed || took a long time)"...

    if (android::base::GetMinimumLogSeverity() <= android::base::DEBUG) {

    double duration_ms = t.duration() * 1000;

    // Any action longer than 50ms will be warned to user as slow operation

    if (duration_ms > 50.0 ||

        android::base::GetMinimumLogSeverity() <= android::base::DEBUG) {

        std::string trigger_name = BuildTriggersString();

        std::string cmd_str = command.BuildCommandString();

        std::string source = command.BuildSourceString();

        LOG(INFO) << "Command '" << cmd_str << "' action=" << trigger_name << source

                  << " returned " << result << " took " << t.duration() << "s";

                  << " returned " << result << " took " << duration_ms << "ms.";

    }

}