Merge "Fix UsbSerialReder for multi-user"

        if (uid != Process.SYSTEM_UID) {

            enforcePackageBelongsToUid(uid, packageName);

            UserHandle user = Binder.getCallingUserHandle();

            int packageTargetSdkVersion;

            long token = Binder.clearCallingIdentity();

            try {

                PackageInfo pkg;

                try {

                    pkg = mContext.getPackageManager().getPackageInfo(packageName, 0);

                    pkg = mContext.getPackageManager()

                            .getPackageInfoAsUser(packageName, 0, user.getIdentifier());

                } catch (PackageManager.NameNotFoundException e) {

                    throw new RemoteException("package " + packageName + " cannot be found");

                }