android_filesystem_config.h: Add Brillo users.

-metrics_collector and metricsd gather and upload device metrics.
-webservd is part of the Weave (Brillo remote setup and management) stack.

Bug: 26337609
Change-Id: Icf6ce75e64293adbe773f2ee65e80629f2eeb737
diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index bbe4486..0c594aa 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -83,6 +83,9 @@
 #define AID_TLSDATE       1039  /* tlsdate unprivileged user */
 #define AID_MEDIA_EX      1040  /* mediaextractor process */
 #define AID_AUDIOSERVER   1041  /* audioserver process */
+#define AID_METRICS_COLL  1042  /* metrics_collector process */
+#define AID_METRICSD      1043  /* metricsd process */
+#define AID_WEBSERV       1044  /* webservd process */
 
 #define AID_SHELL         2000  /* adb and debug shell user */
 #define AID_CACHE         2001  /* cache access */
@@ -184,6 +187,9 @@
     { "tlsdate",       AID_TLSDATE, },
     { "mediaex",       AID_MEDIA_EX, },
     { "audioserver",   AID_AUDIOSERVER, },
+    { "metrics_coll",  AID_METRICS_COLL },
+    { "metricsd",      AID_METRICSD },
+    { "webserv",       AID_WEBSERV },
 
     { "shell",         AID_SHELL, },
     { "cache",         AID_CACHE, },