Added ARTD user

Test: boot and check for artd process
Bug: 177273468
Change-Id: Ic5a3f626598d5347dfada8f67c07c55c7da29f5f
diff --git a/libcutils/include/private/android_filesystem_config.h b/libcutils/include/private/android_filesystem_config.h
index 7489281..43f4d35 100644
--- a/libcutils/include/private/android_filesystem_config.h
+++ b/libcutils/include/private/android_filesystem_config.h
@@ -128,6 +128,7 @@
 #define AID_EXT_OBB_RW 1079       /* GID for OBB directories on external storage */
 #define AID_CONTEXT_HUB 1080      /* GID for access to the Context Hub */
 #define AID_VIRTMANAGER 1081      /* VirtManager daemon */
+#define AID_ARTD 1082             /* ART Service daemon */
 /* Changes to this file must be made in AOSP, *not* in internal branches. */
 
 #define AID_SHELL 2000 /* adb and debug shell user */