instrument fingerprint settings

instrument visibility on all fingerprint views
  rename and delete action
  add fingerprint action is implicit in flow

Bug: 22951001
Change-Id: I53f048f479e24754972b801598d5da393ba9d716

src/com/android/settings/fingerprint/SetupFingerprintEnrollIntroduction.java

@@ -21,6 +21,7 @@ import android.content.res.Resources;
 import android.view.View;
 import android.widget.Button;
 
+import com.android.internal.logging.MetricsLogger;
 import com.android.settings.R;
 import com.android.settings.SetupWizardUtils;
 import com.android.setupwizardlib.view.NavigationBar;
@@ -74,4 +75,9 @@ public class SetupFingerprintEnrollIntroduction extends FingerprintEnrollIntrodu
     public void onNavigateNext() {
         onNextButtonClick();
     }
+
+    @Override
+    protected int getMetricsCategory() {
+        return MetricsLogger.FINGERPRINT_ENROLL_INTRO_SETUP;
+    }
 }