Adds UserManagerInternal.isUserVisible(userId, displayId).

Test: m
Fixes: 242900000

Change-Id: I85a2d5236be75a4cdecff0b6ea0afcebe65c8717

services/core/java/com/android/server/pm/UserManagerInternal.java

@@ -308,4 +308,10 @@ public abstract class UserManagerInternal {
 
     /** TODO(b/239982558): add javadoc / mention invalid_id is used to unassing */
     public abstract void assignUserToDisplay(@UserIdInt int userId, int displayId);
+
+    /**
+     * Returns {@code true} if the user is visible (as defined by
+     * {@link UserManager#isUserVisible()} in the given display.
+     */
+    public abstract boolean isUserVisible(@UserIdInt int userId, int displayId);
 }

services/core/java/com/android/server/pm/UserManagerService.java

@@ -6875,7 +6875,12 @@ public class UserManagerService extends IUserManager.Stub {
                 mUsersOnSecondaryDisplays.put(userId, displayId);
             }
         }
-    }
+
+        @Override
+        public boolean isUserVisible(int userId, int displayId) {
+            return isUserVisibleOnDisplay(userId, displayId);
+        }
+    } // class LocalService
 
     /**
      * Check if user has restrictions