Use MetricsEvent.USER_CREDENTIALS

Bug: 22541933
Change-Id: I0f4bc76933ec04d3e9146a354ea2e1feee1d8e0a
diff --git a/src/com/android/settings/UserCredentialsSettings.java b/src/com/android/settings/UserCredentialsSettings.java
index e4ce267..41bcf43 100644
--- a/src/com/android/settings/UserCredentialsSettings.java
+++ b/src/com/android/settings/UserCredentialsSettings.java
@@ -38,6 +38,8 @@
 import android.widget.ListView;
 import android.widget.TextView;
 
+import com.android.internal.logging.MetricsProto.MetricsEvent;
+
 import java.util.EnumSet;
 import java.util.Set;
 import java.util.SortedMap;
@@ -54,8 +56,7 @@
 
     @Override
     protected int getMetricsCategory() {
-        // TODO (rgl): Declare a metrics category for user credentials.
-        return UNDECLARED;
+        return MetricsEvent.USER_CREDENTIALS;
     }
 
     @Override