Merge "Delay bootanimation exit until told to shutdown."

    void shutdown() override {

        if (mBootAction != nullptr) {

            // If we have a bootaction we want to wait until we are actually

            // told to shut down. If the animation exits early keep the action

            // running.

            char value[PROPERTY_VALUE_MAX] = {0};

            for (int exitRequested = 0; exitRequested == 0; ) {

                property_get("service.bootanim.exit", value, "0");

                exitRequested = atoi(value);

                // Poll value at 10hz.

                if (exitRequested == 0) {

                  usleep(100000);

                }

            }

            mBootAction->shutdown();

            // Give it two seconds to shut down.

            sleep(2);