Merge "Copy collections to avoid concurrent crash"

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.ArrayDeque;

import java.util.Arrays;

/**

 * Persists {@link TaskSnapshot}s to disk.

        @VisibleForTesting

        RemoveObsoleteFilesQueueItem(ArraySet<Integer> persistentTaskIds,

                int[] runningUserIds) {

            mPersistentTaskIds = persistentTaskIds;

            mRunningUserIds = runningUserIds;

            mPersistentTaskIds = new ArraySet<>(persistentTaskIds);

            mRunningUserIds = Arrays.copyOf(runningUserIds, runningUserIds.length);

        }

        @Override