Merge "Block am switch-user when user switching is disallowed"

import android.os.SystemClock;

import android.os.SystemProperties;

import android.os.UserHandle;

import android.os.UserManager;

import android.text.TextUtils;

import android.util.ArrayMap;

import android.util.DebugUtils;

    }

    int runSwitchUser(PrintWriter pw) throws RemoteException {

        UserManager userManager = mInternal.mContext.getSystemService(UserManager.class);

        if (!userManager.canSwitchUsers()) {

            getErrPrintWriter().println("Error: disallowed switching user");

            return -1;

        }

        String user = getNextArgRequired();

        mInterface.switchUser(Integer.parseInt(user));

        return 0;