  We derive all the O(p^6) Chiral Perturbation Theory low-energy constants from
a class of gravity dual models of QCD described by the Yang-Mills and
Chern-Simons Lagrangian terms, with the chiral symmetry broken through boundary
conditions in the infrared. All the constants of the odd intrinsic parity
sector are universally determined by those at O(p^4) in the even sector,
together with an extra resonance term. A few relations for the even sector
couplings are also extracted. Our estimates reasonably agree with the few
available O(p^6) determinations from alternative phenomenological analyses.
Some of the relations between low-energy constants are the manifestation, at
large distances, of universal relations that we find between form factors in
the even and odd sectors, e.g., between the gamma*->pi pi and pi->gamma gamma*
matrix elements.
