Merge "Clear calling identity in callback."

import android.net.INetworkPolicyManager;

import android.net.NetworkCapabilities;

import android.net.Uri;

import android.os.Binder;

import android.os.Build;

import android.os.Handler;

import android.os.Looper;

        IOnSubscriptionsChangedListener callback = new IOnSubscriptionsChangedListener.Stub() {

            @Override

            public void onSubscriptionsChanged() {

                final long identity = Binder.clearCallingIdentity();

                try {

                    if (DBG) log("onOpportunisticSubscriptionsChanged callback received.");

                    mExecutor.execute(() -> onOpportunisticSubscriptionsChanged());

                } finally {

                    Binder.restoreCallingIdentity(identity);

                }

            }

        };