diff --git a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
index 7bc9600..8d613af 100644
--- a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
+++ b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
@@ -108,12 +108,10 @@
 import static com.android.server.wm.ActivityTaskManagerDebugConfig.POSTFIX_VISIBILITY;
 import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_ATM;
 import static com.android.server.wm.ActivityTaskManagerDebugConfig.TAG_WITH_CLASS_NAME;
-import static com.android.server.wm.ActivityTaskManagerInternal.ASSIST_ACTIVITY_ID;
 import static com.android.server.wm.ActivityTaskManagerInternal.ASSIST_KEY_CONTENT;
 import static com.android.server.wm.ActivityTaskManagerInternal.ASSIST_KEY_DATA;
 import static com.android.server.wm.ActivityTaskManagerInternal.ASSIST_KEY_RECEIVER_EXTRAS;
 import static com.android.server.wm.ActivityTaskManagerInternal.ASSIST_KEY_STRUCTURE;
-import static com.android.server.wm.ActivityTaskManagerInternal.ASSIST_TASK_ID;
 import static com.android.server.wm.ActivityTaskManagerService.H.REPORT_TIME_TRACKER_MSG;
 import static com.android.server.wm.ActivityTaskManagerService.UiHandler.DISMISS_DIALOG_UI_MSG;
 import static com.android.server.wm.RecentsAnimationController.REORDER_KEEP_IN_PLACE;
@@ -216,7 +214,6 @@
 import android.util.ArrayMap;
 import android.util.EventLog;
 import android.util.Log;
-import android.util.Pair;
 import android.util.Slog;
 import android.util.SparseArray;
 import android.util.SparseIntArray;
@@ -266,6 +263,7 @@
 import com.android.server.appop.AppOpsService;
 import com.android.server.firewall.IntentFirewall;
 import com.android.server.pm.UserManagerService;
+import com.android.server.policy.PermissionPolicyInternal;
 import com.android.server.uri.UriGrantsManagerInternal;
 import com.android.server.vr.VrManagerInternal;
 
@@ -348,6 +346,7 @@
     ActivityManagerInternal mAmInternal;
     UriGrantsManagerInternal mUgmInternal;
     private PackageManagerInternal mPmInternal;
+    private PermissionPolicyInternal mPermissionPolicyInternal;
     @VisibleForTesting
     final ActivityTaskManagerInternal mInternal;
     PowerManagerInternal mPowerManagerInternal;
@@ -5786,6 +5785,13 @@
         return mPmInternal;
     }
 
+    PermissionPolicyInternal getPermissionPolicyInternal() {
+        if (mPermissionPolicyInternal == null) {
+            mPermissionPolicyInternal = LocalServices.getService(PermissionPolicyInternal.class);
+        }
+        return mPermissionPolicyInternal;
+    }
+
     AppWarnings getAppWarningsLocked() {
         return mAppWarnings;
     }