Camera: Camera shouldn't throw 'RejectedExecutionException'

import static com.android.internal.util.function.pooled.PooledLambda.obtainRunnable;

import android.annotation.NonNull;

import android.hardware.ICameraService;

import android.hardware.camera2.CameraAccessException;

import android.hardware.camera2.CameraCaptureSession;

import android.os.Binder;

import android.os.Build;

import android.os.Handler;

import android.os.HandlerExecutor;

import android.os.IBinder;

import android.os.Looper;

import android.os.RemoteException;

import android.util.SparseArray;

import android.view.Surface;

import com.android.internal.util.Preconditions;

import java.util.AbstractMap.SimpleEntry;

import java.util.ArrayList;

import java.util.Collection;

    } // public class CameraDeviceCallbacks

    /**

     * A camera specific adapter {@link Executor} that posts all executed tasks onto the given

     * {@link Handler}.

     *

     * @hide

     */

    private static class CameraHandlerExecutor implements Executor {

        private final Handler mHandler;

        public CameraHandlerExecutor(@NonNull Handler handler) {

            mHandler = Preconditions.checkNotNull(handler);

        }

        @Override

        public void execute(Runnable command) {

            // Return value of 'post()' will be ignored in order to keep the

            // same camera behavior. For further details see b/74605221 .

            mHandler.post(command);

        }

    }

    /**

     * Instantiate a new Executor.

     *

        }

        if (handler != null) {

            return new HandlerExecutor(handler);

            return new CameraHandlerExecutor(handler);

        }

        return null;

     * </p>

     */

    static Executor checkAndWrapHandler(Handler handler) {

        return new HandlerExecutor(checkHandler(handler));

        return new CameraHandlerExecutor(checkHandler(handler));

    }

    /**