From cd52980d92dbb2502ae5c03f82798e63cad69d65 Mon Sep 17 00:00:00 2001
From: Kevin Chyn <kchyn@google.com>
Date: Thu, 30 Jul 2020 14:05:07 -0700
Subject: [PATCH] Change GenerateChallengeCallback from abstract class to
 interface

This allows us to use lamdas

Test: Builds
Bug: 161325267
Change-Id: I54e75d363969bbe74e346f2685b331d8743bb2c5
---
 .../android/hardware/fingerprint/FingerprintManager.java    | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/core/java/android/hardware/fingerprint/FingerprintManager.java b/core/java/android/hardware/fingerprint/FingerprintManager.java
index e384da7574ada..b92051b24dfaf 100644
--- a/core/java/android/hardware/fingerprint/FingerprintManager.java
+++ b/core/java/android/hardware/fingerprint/FingerprintManager.java
@@ -377,12 +377,12 @@ public class FingerprintManager implements BiometricAuthenticator, BiometricFing
     /**
      * @hide
      */
-    public abstract static class GenerateChallengeCallback {
-        public abstract void onChallengeGenerated(long challenge);
+    public interface GenerateChallengeCallback {
+        void onChallengeGenerated(long challenge);
     }
 
     private abstract static class InternalGenerateChallengeCallback
-            extends GenerateChallengeCallback {}
+            implements GenerateChallengeCallback {}
 
     /**
      * Request authentication of a crypto object. This call warms up the fingerprint hardware