Add @IntDef for status of committed rollback.

Per API council request.

Bug: 127282563
Test: atest RollbackTest
Change-Id: I72e979ce3978c72a0783b44a044ad536b35ee09d

core/java/android/content/rollback/RollbackManager.java

@@ -16,6 +16,7 @@
 
 package android.content.rollback;
 
+import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
@@ -27,6 +28,8 @@ import android.content.pm.ParceledListSlice;
 import android.content.pm.VersionedPackage;
 import android.os.RemoteException;
 
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
 import java.util.List;
 
 /**
@@ -112,6 +115,20 @@ public final class RollbackManager {
     public static final String EXTRA_STATUS_MESSAGE =
             "android.content.rollback.extra.STATUS_MESSAGE";
 
+    /**
+     * Status result of committing a rollback.
+     *
+     * @hide
+     */
+    @IntDef(prefix = "STATUS_", value = {
+            STATUS_SUCCESS,
+            STATUS_FAILURE,
+            STATUS_FAILURE_ROLLBACK_UNAVAILABLE,
+            STATUS_FAILURE_INSTALL,
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface Status {};
+
     /**
      * The rollback was successfully committed.
      */

services/core/java/com/android/server/rollback/RollbackManagerServiceImpl.java

@@ -684,7 +684,8 @@ class RollbackManagerServiceImpl extends IRollbackManager.Stub {
      * @param status the RollbackManager.STATUS_* code with the failure.
      * @param message the failure message.
      */
-    private void sendFailure(IntentSender statusReceiver, int status, String message) {
+    private void sendFailure(IntentSender statusReceiver, @RollbackManager.Status int status,
+            String message) {
         Log.e(TAG, message);
         try {
             final Intent fillIn = new Intent();