Consolidate registration of HIDL and AIDL HALs

This CL establishes a single flow of registration for both HIDL and
AIDL HALs. The registration of both is done on a separate thread to
avoid blocking system server. Previously, only AIDL registration was
done on a separate thread.

Bug: 184677066
Test: atest CtsBiometricsTestCases
Test: atest AuthServiceTest
Test: atest Fingerprint21Test
Test: atest Face10Test

Change-Id: I4442db15a7b690bb34c6eb7e8793ab4411cbd6d2

services/java/com/android/server/SystemServer.java

@@ -108,7 +108,6 @@ import com.android.server.attention.AttentionManagerService;
 import com.android.server.audio.AudioService;
 import com.android.server.biometrics.AuthService;
 import com.android.server.biometrics.BiometricService;
-import com.android.server.biometrics.sensors.BiometricServiceCallback;
 import com.android.server.biometrics.sensors.face.FaceService;
 import com.android.server.biometrics.sensors.fingerprint.FingerprintService;
 import com.android.server.biometrics.sensors.iris.IrisService;
@@ -214,11 +213,9 @@ import java.io.FileDescriptor;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.text.SimpleDateFormat;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Date;
 import java.util.LinkedList;
-import java.util.List;
 import java.util.Locale;
 import java.util.Timer;
 import java.util.TreeSet;
@@ -2334,12 +2331,10 @@ public final class SystemServer implements Dumpable {
             final boolean hasFeatureFingerprint
                     = mPackageManager.hasSystemFeature(PackageManager.FEATURE_FINGERPRINT);
 
-            final List<BiometricServiceCallback> biometricServiceCallback = new ArrayList<>();
             if (hasFeatureFace) {
                 t.traceBegin("StartFaceSensor");
                 final FaceService faceService =
                         mSystemServiceManager.startService(FaceService.class);
-                biometricServiceCallback.add(faceService);
                 t.traceEnd();
             }
 
@@ -2353,18 +2348,12 @@ public final class SystemServer implements Dumpable {
                 t.traceBegin("StartFingerprintSensor");
                 final FingerprintService fingerprintService =
                         mSystemServiceManager.startService(FingerprintService.class);
-                biometricServiceCallback.add(fingerprintService);
                 t.traceEnd();
             }
 
             // Start this service after all biometric sensor services are started.
             t.traceBegin("StartBiometricService");
             mSystemServiceManager.startService(BiometricService.class);
-            for (BiometricServiceCallback service : biometricServiceCallback) {
-                Slog.d(TAG, "Notifying onBiometricServiceReady for: "
-                        + service.getClass().getSimpleName());
-                service.onBiometricServiceReady();
-            }
             t.traceEnd();
 
             t.traceBegin("StartAuthService");