From 9521231031543c1687c736d17d5bad989a6bc2de Mon Sep 17 00:00:00 2001
From: Chris Wren <cwren@android.com>
Date: Mon, 24 Aug 2015 16:19:03 -0400
Subject: [PATCH] instrument fingerprint crypto token service

Histogram counts number of calls with and without a token.

Bug: 22951001
Change-Id: Idaabee389bfa33eb009d48bb9a0edae146bcc217
---
 .../java/com/android/server/fingerprint/FingerprintService.java  | 1 +
 1 file changed, 1 insertion(+)

diff --git a/services/core/java/com/android/server/fingerprint/FingerprintService.java b/services/core/java/com/android/server/fingerprint/FingerprintService.java
index befa3116bc8c9..932662fe72bcd 100644
--- a/services/core/java/com/android/server/fingerprint/FingerprintService.java
+++ b/services/core/java/com/android/server/fingerprint/FingerprintService.java
@@ -764,6 +764,7 @@ public class FingerprintService extends SystemService implements IBinder.DeathRe
             mHandler.post(new Runnable() {
                 @Override
                 public void run() {
+                    MetricsLogger.histogram(mContext, "fingerprint_token", opId != 0L ? 1 : 0);
                     startAuthentication(token, opId, effectiveGroupId, receiver, flags, restricted);
                 }
             });