active metric dir for statsd

Bug: 123904359
Test: unit test
Change-Id: I92ac4ef97fb4f951270679f829601b1aca893b7c
diff --git a/private/file_contexts b/private/file_contexts
index 0c37525..a2e5a9d 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -482,6 +482,7 @@
 /data/misc/recovery(/.*)?       u:object_r:recovery_data_file:s0
 /data/misc/shared_relro(/.*)?   u:object_r:shared_relro_file:s0
 /data/misc/sms(/.*)?            u:object_r:radio_data_file:s0
+/data/misc/stats-active-metric(/.*)? u:object_r:stats_data_file:s0
 /data/misc/stats-data(/.*)?     u:object_r:stats_data_file:s0
 /data/misc/stats-service(/.*)?  u:object_r:stats_data_file:s0
 /data/misc/systemkeys(/.*)?     u:object_r:systemkeys_data_file:s0