Corrected order of forwards declarations.
Corrected order of forwards declarations.

Forwards declarations should be ordered alphabetically.

Review: https://reviews.apache.org/r/47453/

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