Improve factory screen brightness

chromeos_startup

Index: chromeos_startup
diff --git a/chromeos_startup b/chromeos_startup
index 0b1e6c66675401c6d6f0fa61dadd7f4f47985d27..cf9ac00d26821768df0ef034b45ded4f5ffb8ac2 100755
--- a/chromeos_startup
+++ b/chromeos_startup
@@ -74,6 +74,14 @@ fi
 RESET_FILE="/mnt/stateful_partition/factory_install_reset"
 if [ -f "$RESET_FILE" ]; then
   if [ $(stat -c%u "$RESET_FILE") -eq 0 ]; then
+    # Light up screen in case you can't see our splash image.
+    LIGHTUP_SCREEN=/usr/sbin/lightup_screen
+    if [ -x ${LIGHTUP_SCREEN} ]; then
+      ${LIGHTUP_SCREEN}
+    else
+      echo "${LIGHTUP_SCREEN} does not exist or not executable"
+    fi
+
     echo "Erasing stateful partition..."
     # Show a splash image to inform OPs it is wiping the disk.
     if [ -x /usr/bin/ply-image ]; then