Use current user instead of SYSTEM.

Bug: 147702827
Test: manual
Change-Id: I7dae270b53e76d82d74d08b67dab0c115057210a
diff --git a/tests/tests/permission/src/android/permission/cts/ProviderPermissionTest.java b/tests/tests/permission/src/android/permission/cts/ProviderPermissionTest.java
index 78e82ff..fd72e77 100644
--- a/tests/tests/permission/src/android/permission/cts/ProviderPermissionTest.java
+++ b/tests/tests/permission/src/android/permission/cts/ProviderPermissionTest.java
@@ -261,7 +261,7 @@
                     ui.adoptShellPermissionIdentity("android.permission.GET_RUNTIME_PERMISSIONS");
                     try {
                         flags = pm.getPermissionFlags(WRITE_EXTERNAL_STORAGE, pkg.packageName,
-                                UserHandle.SYSTEM);
+                                android.os.Process.myUserHandle());
                     } finally {
                         ui.dropShellPermissionIdentity();
                     }