resolve merge conflicts of 2c712acefa935baa4f5b1dc0d321957add70e9c1 to master

Bug: None
Test: I solemnly swear I tested this conflict resolution.
Change-Id: Ie50a4cf9233732646ef340dbce54f5f51bda64cd
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 61d8eb1..3c26df3 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -7631,6 +7631,19 @@
                 "face_unlock_always_require_confirmation";
 
         /**
+         * Whether or not a user should re enroll their face.
+         *
+         * Face unlock re enroll.
+         *  0 = No re enrollment.
+         *  1 = Re enrollment is suggested.
+         *  2 = Re enrollment is required after a set time period.
+         *  3 = Re enrollment is required immediately.
+         *
+         * @hide
+         */
+        public static final String FACE_UNLOCK_RE_ENROLL = "face_unlock_re_enroll";
+
+        /**
          * Whether or not debugging is enabled.
          * @hide
          */
diff --git a/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java b/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
index 3a7de18..86625fa 100644
--- a/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
+++ b/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
@@ -719,7 +719,8 @@
                  Settings.Secure.BIOMETRIC_DEBUG_ENABLED,
                  Settings.Secure.FACE_UNLOCK_ATTENTION_REQUIRED,
                  Settings.Secure.FACE_UNLOCK_DIVERSITY_REQUIRED,
-                 Settings.Secure.MANAGED_PROVISIONING_DPC_DOWNLOADED);
+                 Settings.Secure.MANAGED_PROVISIONING_DPC_DOWNLOADED,
+                 Settings.Secure.FACE_UNLOCK_RE_ENROLL);
 
     @Test
     public void systemSettingsBackedUpOrBlacklisted() {