Check for sidecar null-ness before removing

Test: cd tests/robotests && mma
Bug: 36681116
Change-Id: Id48113502c538b607d92700d3e58943614cfc150

src/com/android/settings/password/FingerprintManagerWrapper.java

@@ -18,6 +18,8 @@ package com.android.settings.password;
 
 import android.annotation.NonNull;
 import android.hardware.fingerprint.FingerprintManager;
+import android.hardware.fingerprint.FingerprintManager.EnrollmentCallback;
+import android.os.CancellationSignal;
 
 import com.android.internal.util.Preconditions;
 
@@ -33,15 +35,33 @@ public class FingerprintManagerWrapper implements IFingerprintManager {
         mFingerprintManager = fingerprintManager;
     }
 
+    @Override
     public boolean isHardwareDetected() {
         return mFingerprintManager.isHardwareDetected();
     }
 
+    @Override
     public boolean hasEnrolledFingerprints(int userId) {
         return mFingerprintManager.hasEnrolledFingerprints(userId);
     }
 
+    @Override
     public long preEnroll() {
         return mFingerprintManager.preEnroll();
     }
+
+    @Override
+    public void setActiveUser(int userId) {
+        mFingerprintManager.setActiveUser(userId);
+    }
+
+    @Override
+    public void enroll(
+            byte[] token,
+            CancellationSignal cancel,
+            int flags,
+            int userId,
+            EnrollmentCallback callback) {
+        mFingerprintManager.enroll(token, cancel, flags, userId, callback);
+    }
 }

src/com/android/settings/password/IFingerprintManager.java

@@ -16,6 +16,9 @@
 
 package com.android.settings.password;
 
+import android.hardware.fingerprint.FingerprintManager.EnrollmentCallback;
+import android.os.CancellationSignal;
+
 /**
  * This is the workaround to allow us test {@link SetNewPasswordController} which uses a new hidden
  * API {@link android.hardware.fingerprint.FingerprintManager#hasEnrolledFingerprints(int)} that
@@ -28,4 +31,9 @@ public interface IFingerprintManager {
     boolean hasEnrolledFingerprints(int userId);
 
     long preEnroll();
+
+    void setActiveUser(int userId);
+
+    void enroll(byte [] token, CancellationSignal cancel, int flags,
+            int userId, EnrollmentCallback callback);
 }