Cleaned up FilesProcess construction.
Cleaned up FilesProcess construction.

Moves the FilesProcess realm initialization from constructor to
initializer list.

Review: https://reviews.apache.org/r/45438/

abudnik/mesos,verizonlabs/mesos,gsantovena/mesos,craimbert/mesos,Aman-Jain-14/customizedMesos,chhsia0/mesos,andschwa/mesos,asamerh4/mesos,kaysoky/mesos,gsantovena/mesos,dforsyth/mesos,kaysoky/mesos,asamerh4/mesos,zmalik/mesos,kaysoky/mesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,jpeach/mesos,verizonlabs/mesos,zmalik/mesos,neilconway/mesos,yuquanshan/customizedMesos,neilconway/mesos,gsantovena/mesos,kaysoky/mesos,chhsia0/mesos,Gilbert88/mesos,yuquanshan/customizedMesos,asamerh4/mesos,Gilbert88/mesos,chhsia0/mesos,Gilbert88/mesos,zmalik/mesos,abudnik/mesos,yuquanshan/customizedMesos,verizonlabs/mesos,neilconway/mesos,jpeach/mesos,andschwa/mesos,abudnik/mesos,chhsia0/mesos,verizonlabs/mesos,reneploetz/mesos,dforsyth/mesos,abudnik/mesos,gsantovena/mesos,zmalik/mesos,abudnik/mesos,Gilbert88/mesos,chhsia0/mesos,reneploetz/mesos,dforsyth/mesos,yuquanshan/customizedMesos,dforsyth/mesos,andschwa/mesos,zmalik/mesos,asamerh4/mesos,craimbert/mesos,andschwa/mesos,jpeach/mesos,Aman-Jain-14/customizedMesos,neilconway/mesos,reneploetz/mesos,jpeach/mesos,zmalik/mesos,kaysoky/mesos,abudnik/mesos,neilconway/mesos,chhsia0/mesos,gsantovena/mesos,neilconway/mesos,reneploetz/mesos,andschwa/mesos,yuquanshan/customizedMesos,neilconway/mesos,dforsyth/mesos,gsantovena/mesos,Gilbert88/mesos,kaysoky/mesos,jpeach/mesos,jpeach/mesos,craimbert/mesos,yuquanshan/customizedMesos,craimbert/mesos,zmalik/mesos,jpeach/mesos,andschwa/mesos,reneploetz/mesos,Gilbert88/mesos,craimbert/mesos,chhsia0/mesos,Aman-Jain-14/customizedMesos,verizonlabs/mesos,dforsyth/mesos,andschwa/mesos,Gilbert88/mesos,verizonlabs/mesos,abudnik/mesos,craimbert/mesos,asamerh4/mesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,reneploetz/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,verizonlabs/mesos,asamerh4/mesos,asamerh4/mesos,craimbert/mesos,reneploetz/mesos,Aman-Jain-14/customizedMesos,dforsyth/mesos