040000 tree 554dbf0052517ee973f124b2db82a8bef118fc3b	base
040000 tree a5807b20873fd9928a3d58d4837bbc92a61684e3	chromeos
040000 tree 0098ec05edb6ef19cf69e6973967c283fd298fb0	chromeos_base
040000 tree 951d097ce357023226f42e4b47be65bcfc0223f4	mask_only