Replace magical number by variable and add some comments to explain why it is there. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=122790850
Replace magical number by variable and add some comments to explain why it is
there.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=122790850

sneakywombat/capirca,google/capirca,pettai/capirca,google/capirca,ryantierney513/capirca,pettai/capirca,google/capirca,rarcotvmw/capirca,ryantierney513/capirca,rarcotvmw/capirca,rarcotvmw/capirca,sneakywombat/capirca,google/capirca,ryantierney513/capirca,sneakywombat/capirca